Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Jay w on 24 May 2008, 02:02:50

Title: LPG conversion started
Post by: Jay w on 24 May 2008, 02:02:50
Before i start can i say one thing, this isn't a definitive guide this is my way of fitting my LPG kit.

I bought one from Jeremy again, purely because the last one was good and the support was excellent.

Tank, already mounted on the frame
(http://img359.imageshack.us/img359/1449/dscf2486re4.jpg)

Vaporiser with attachments
(http://img299.imageshack.us/img299/9610/dscf2487vh6.jpg)

ECU and software and OBD lead (now USB :y)
(http://img60.imageshack.us/img60/3176/dscf2488sr3.jpg)
(http://img60.imageshack.us/img60/1271/dscf2492qi4.jpg)


Pipework
(http://img58.imageshack.us/img58/4141/dscf2489rm1.jpg)
(http://img58.imageshack.us/img58/7281/dscf2496nz6.jpg) 
Injectors and loom
(http://img299.imageshack.us/img299/2613/dscf2490je3.jpg)(http://img55.imageshack.us/img55/8028/dscf2493ym2.jpg)

General odds and sods as well as the installation manual
(http://img55.imageshack.us/img55/926/dscf2495xx4.jpg)

i wanted to mount the ECU and vapouriser under the bumper, so first thing was to get that off and to a trial fit, there isn't a lot of room, but there is enough to do what i wanted,
(http://img239.imageshack.us/img239/6778/dscf2499px9.jpg)(http://img172.imageshack.us/img172/1413/dscf2502az0.jpg)
I couldn't mouth the ECU tonight as it was gone midnight when i was doing this  ;D
The loom is now in place, tomorrow i will concentrate on the engine bay, water pipes, inlet manifold, and connecting the wiring.

The final this i did was to pain the filler neck....yes that is the wifes tumble dryer i am using  ;D ;D ;D
(http://img297.imageshack.us/img297/4192/dscf2485vm4.jpg)

I have no vested interest in the company who supplied my kit, however i will say they are 10/10, Jeremy is always helpful and the product itself is geared to someone who is mechanically minded and wants to save money by fitting the kit themselves.

If you mention OOF i believe you will get some discount, i have a 80l tank and 6 cyl kit and paid less than £700....trust me that is a bargain

More tomorrow....or later on today

Title: Re: LPG conversion started
Post by: doz on 24 May 2008, 04:08:00
I will watch this with great interest. Something I was thinking of doing myself but what do you do about the certificate for the insurance? THis isn't a critisium but is wise to put the regulator/ecu some where it may get damaged in a relative minor shunt?
Title: Re: LPG conversion started
Post by: sassanach on 24 May 2008, 10:07:22
my insurance is with esure on the caddy,their response..... that will be £53 please, no certificate required.
Title: Re: LPG conversion started
Post by: Danny on 24 May 2008, 12:46:25
Quote
my insurance is with esure on the caddy,their response..... that will be £53 please, no certificate required.

you have a Caddy? which one?? would like to see pics please, i like caddies :D
Title: Re: LPG conversion started
Post by: Jay w on 24 May 2008, 13:08:24
Quote
I will watch this with great interest. Something I was thinking of doing myself but what do you do about the certificate for the insurance? THis isn't a critisium but is wise to put the regulator/ecu some where it may get damaged in a relative minor shunt?

My insurer (privilge) just want it confirmed it i fitted  by a trained mechanic (which i am  :y)

That thought had crossed my mind but then even mounting it on the inner wing could damage it as well.....

just finished for the morning, will post some pics up later  :y
Title: Re: LPG conversion started
Post by: doz on 24 May 2008, 13:31:07
cool look forward to seeing the progress
Title: Re: LPG conversion started
Post by: Entwood on 24 May 2008, 15:17:07
Looks good  :)

Appears you're putting the vapourisor the same place they put mine ... just above the horns. Seems to fit quite snugly in there :)

Just filled up my beast .... 283 miles / 64.88 Ltrs LPG = £35.04 p

Works out as 19.8 mpg or 12.38 p/mile

Equivalent petrol costs @ 23 mpg / £1:14.9 ltr = £64.19 or 22.68 p/mile

This shows the savings to be around 10p/mile

as I do around 900-1000 miles / month ......   all I can say is  :) :) :) :) :) :) :) :)

Title: Re: LPG conversion started
Post by: Lazydocker on 24 May 2008, 21:27:48
Looks good... I'll be watching this with great interest as I'm planning to fit mine in the very near future!!!
Title: Re: LPG conversion started
Post by: Martin_1962 on 24 May 2008, 22:19:02
Interesting to see how it is going.
Title: Re: LPG conversion started
Post by: Jay w on 25 May 2008, 00:22:16
Been a constructive day....after a fashion  ;)

95% of the front end is in, all the waterpipes are plumbed in, i did the same as last time and took my feed from the pipe that runs between the bridge and the HBV
(http://img149.imageshack.us/img149/4841/dscf2508rr6.jpg)

Once that was done it was then on to the inlet manifold, 6mm holes
(http://img515.imageshack.us/img515/9671/dscf2513zx7.jpg)(http://img515.imageshack.us/img515/5087/dscf2514gj3.jpg)
I ran into a small problem that will mean i wont be able to complete the install, two of the nozzels snapped, however a quick phone call the Jeremy and all is good, a couple more will be with me next week, that didn't stop me from pushing on though.
With the manifold drilled, hoses sized and injectors mounted  did a trial fit of the manifold,
(http://img165.imageshack.us/img165/1993/dscf2516fs7.jpg)(http://img242.imageshack.us/img242/3218/dscf2517fn2.jpg)(http://img355.imageshack.us/img355/6695/dscf2518xo3.jpg)
The left hand injectors sit a little high, i may have to modify the mount

The next job was the pipework, the last time i did this with copper it was a total nightmare, this kit came with Polypipe, reinforced plastic type tube that made the whole job a lot easier
(http://img515.imageshack.us/img515/946/dscf2512ww0.jpg)

Once i got to the back i decided to mount the tank, this was pretty easy, the biggest issue is that the holes that i have drilled sit right in the chassis legs, this means that i cannot get to the back end of the bolt, the only solution is to get longer bolts
(http://img165.imageshack.us/img165/9804/dscf2520qr2.jpg)

But the time i got this far it was too late to hook up the pipework to the tank, it was too late to start drilling the floor.

Tomorrow i will be doing the filler neck, connecting the pipework and doing the electrical, weather permitting  :y
Title: Re: LPG conversion started
Post by: Kevin Wood on 25 May 2008, 00:33:03
Suck eggs time here, I'm sure, but if you end up fitting the bolts through the chassis legs remember to put a spacer inside so you don't crush the chassis.

Looking good. Are those injectors the 3 ohm Valtek ones? We put them on Marie's car and they seem to be much quieter than the yellow 1 ohm ones.

Edited to add: Is cable tying the LPG pipe to the petrol lines acceptable to the LPGA? That's a much easier way of doing it. Had assumed the LPG line needed its' own clips. Not sure why. :-/

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 25 May 2008, 00:42:00
Quote
Suck eggs time here, I'm sure, but if you end up fitting the bolts through the chassis legs remember to put a spacer inside so you don't crush the chassis.

Looking good. Are those injectors the 3 ohm Valtek ones? We put them on Marie's car and they seem to be much quieter than the yellow 1 ohm ones.

Edited to add: Is cable tying the LPG pipe to the petrol lines acceptable to the LPGA? That's a much easier way of doing it. Had assumed the LPG line needed its' own clips. Not sure why. :-/

Kevin

Thanks for the reminder the biggest issue will be getting the spacer in the chassis  >:(

yes they are the 3ohm ones, Jeremy recommended these over the yellow ones

Hmmmmm, i was wondering about the cable ties, , the car is sill up in the air so i change that if required tomorrow
Title: Re: LPG conversion started
Post by: Kevin Wood on 25 May 2008, 00:49:04
Not saying the cable ties are a problem. I don't know. I just assumed you had to use the clips provided but it's worth finding out because it's a lot less holes in the car.

Is there any flexibility in where you drill the holes with those tanks? I thought the chassis member would be a bit of a pain. :-/

Does the frame on that tank come as far forwards as the towbar mounting points? Just wondering if I'm going to have issues with that too, as the towbar has a frame on the boot floor.

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 25 May 2008, 00:59:58
Quote
Not saying the cable ties are a problem. I don't know. I just assumed you had to use the clips provided but it's worth finding out because it's a lot less holes in the car.

Is there any flexibility in where you drill the holes with those tanks? I thought the chassis member would be a bit of a pain. :-/

Does the frame on that tank come as far forwards as the towbar mounting points? Just wondering if I'm going to have issues with that too, as the towbar has a frame on the boot floor.

Kevin

the frame is predrilled, there are 4 holes on each end , i understand these have to be used.

i have not had or seen a towbar set up on a miggy, i will have to pop over sometime and let you have a look
Title: Re: LPG conversion started
Post by: Lazydocker on 25 May 2008, 09:31:55
I can confirm that cable ties will not comply with the LPGA COP II... I know this because when i was going to get my last car certified they told me I had to mount the pipes with proper clips!

It all looks good though... I'm interested in the tank mounting because I've got a tow bar too! You should be able to see the flat points in the boot floor where the tow bar mounts. With my last tank there was a choice of mounting points... 2 each end of the frame and 2 either side (under the tank) and I believe you can use either as long as it is secure... Might be worth checking the tank frame to see if you can make life easier for yourself!
Title: Re: LPG conversion started
Post by: Martin_1962 on 25 May 2008, 10:26:04
Quote
Not saying the cable ties are a problem. I don't know. I just assumed you had to use the clips provided but it's worth finding out because it's a lot less holes in the car.

Is there any flexibility in where you drill the holes with those tanks? I thought the chassis member would be a bit of a pain. :-/

Does the frame on that tank come as far forwards as the towbar mounting points? Just wondering if I'm going to have issues with that too, as the towbar has a frame on the boot floor.

Kevin

My tank mounts are nowhere near my towbar mounts
Title: Re: LPG conversion started
Post by: sassanach on 25 May 2008, 12:48:08
one day when im really bored  im going to find out if there is any difference between fitting the nozzles where JW has them and where i fit them ie next to the petrol injectors and pointing in the same direction as same. :)
Title: Re: LPG conversion started
Post by: mkaminski100 on 25 May 2008, 14:11:30
I see STAG 300 in here. :) Polish producer, really good ones, reliable, and being developed. I think there is new firmware being released just now.
Are injectors Valtec?  These are very good for low temp and I know many people which set their LPG ECU to switch to LPG at 15 degrees - this wouldn't be a good idea with martix injectors.

What nozzle hole size did you go for? http://www.ac.com.pl/autogaz/en/warsztat/Dysze/

You may find some hints about programming and setting up this controller in here http://www.ac.com.pl/autogaz/en/stag300/ and here http://www.pace4diy.com/stag-300.pdf

You can always ask  question here. This is polish STAG producer forum but I think there are many mechanics/garages/ AC STAG technical advisers which speak English. If in doubt, I can post a question. https://www.ac.com.pl/autogaz/forum/viewforum.php?f=7
Title: Re: LPG conversion started
Post by: Martin_1962 on 25 May 2008, 16:17:43
Quote
one day when im really bored  im going to find out if there is any difference between fitting the nozzles where JW has them and where i fit them ie next to the petrol injectors and pointing in the same direction as same. :)


I don't think it is too critical with gas
Title: Re: LPG conversion started
Post by: JamesV6CDX on 25 May 2008, 16:22:01
I suspect when the piston goes down, it's all sucked in regardless being a gas, whereas with petrol it's a liquid and needs better direction - but I'm no expert!
Title: Re: LPG conversion started
Post by: Omegatoy on 25 May 2008, 19:49:34
Quote
one day when im really bored  im going to find out if there is any difference between fitting the nozzles where JW has them and where i fit them ie next to the petrol injectors and pointing in the same direction as same. :)


Last system i fitted we did an experiment and mounted the gas injectors as close to the petrol injectors as possible, was a pain to do it that way but the  result was the engine was a lot more responsive to the throttle, more like the engine ran on petrol,power was closer to the petrol and it was easier to set it up!!!!
so do it!!!!! :y
Title: Re: LPG conversion started
Post by: Jay w on 26 May 2008, 00:14:56
changed the cable ties for P clips today, total pain in the a$$ but the job has been done n accordance with COP II

The bolts on the tank frame have been changed for longer ones that go through the chassis legs.
Anyway the day progress......

started at 8:45 with the filler, this was going to be bumper mounted like the last one, i had painted it already,
(http://img355.imageshack.us/img355/5025/dscf2522kd8.jpg)
first thing was to mask the area
(http://img144.imageshack.us/img144/3457/dscf2521li7.jpg)
Having done one before it doesn't get any easier, drilling the bumper wrong will render it useless.
(http://img55.imageshack.us/img55/2674/dscf2524wo5.jpg)
Behind the bumper is a reinforcement this needs to be cut back
(http://img174.imageshack.us/img174/8238/dscf2523wq7.jpg)
once the filler had been fitted
(http://img211.imageshack.us/img211/8331/dscf2525yg3.jpg)
and once the bumper had been refitted
(http://img524.imageshack.us/img524/2764/dscf2526jr7.jpg)
from there it was a case of feeding the filler pipe to the tank, the first thing was to drill and fit the sleeve, this is part of the LPGA COP II, from the tank there is a tube that sits over the filler tube, this is to allow gas escape if required
(http://img502.imageshack.us/img502/2161/dscf2528rn3.jpg)
Once this had been done the outlet tube was also done in the same was, from there it was on to the interior

The kit comes with warning buzzer and switch/fuel gauge, i had decided all of this would be mounted on the centre console
(http://img144.imageshack.us/img144/3125/dscf2529mj2.jpg)
stripped back and ready for wiring and dummy fit with the warning buzzer
(http://img210.imageshack.us/img210/5828/dscf2530nq6.jpg)
and finally installed
(http://img60.imageshack.us/img60/8889/dscf2531bg3.jpg)

the vaporiser wiring has been completed, all that remains is the RPM signal and lambda sensors needs connecting, had the two nozzles not been broken it would have been running tonight with finishing off tonight
Title: Re: LPG conversion started
Post by: Jay w on 26 May 2008, 00:22:02
Quote
I see STAG 300 in here. :) Polish producer, really good ones, reliable, and being developed. I think there is new firmware being released just now.
Are injectors Valtec?  These are very good for low temp and I know many people which set their LPG ECU to switch to LPG at 15 degrees - this wouldn't be a good idea with martix injectors.

What nozzle hole size did you go for? http://www.ac.com.pl/autogaz/en/warsztat/Dysze/

You may find some hints about programming and setting up this controller in here http://www.ac.com.pl/autogaz/en/stag300/ and here http://www.pace4diy.com/stag-300.pdf

You can always ask  question here. This is polish STAG producer forum but I think there are many mechanics/garages/ AC STAG technical advisers which speak English. If in doubt, I can post a question. https://www.ac.com.pl/autogaz/forum/viewforum.php?f=7

yes it is the Stag system with Valtec injectors, i have used one in the past and have good results, was impressed last time.

i will be drilling the nozzles to 3.0 mm, given the calculations i have done this would be ideal, it should be 2.6mm but i dont have that size drill so i am going the next size up

Thanks for the info  :y :y
 
Title: Re: LPG conversion started
Post by: Jay w on 26 May 2008, 17:37:10
well it is 98% done......

If i hadn't had a couple of nozzles break it would be running.

Tank was fitted with the longer bolts today, all the connectors hooked up, electrics now done.

i wont be able to finish it now until next weekend, now, all i will need to do is fit the nozzles to the manifold and put the manifold on, from there it will be a case of fill it up with gas and then do the setup

Total time taken = 32 man hours, now i wasn't going mad, i took my time and plodded through it, in addition i also fitted the MV6 interior within that time.




Title: Re: LPG conversion started
Post by: Dazzler on 26 May 2008, 17:40:25
Coming along nicely Jay :y
Title: Re: LPG conversion started
Post by: Entwood on 26 May 2008, 18:11:19
Nice work ...  you'll love it when it's finished ... just filled up after the weekend visit to WIM and a few other running around bits ...  

214 miles = 48.52 ltrs LPG = £26.20 ( @ 54p/ltr )

estimated petrol cost would have been £48.54 ( @ £114.9/ltr and 23 mpg)

 :y :y :y :y :y :y :y

Title: Re: LPG conversion started
Post by: Dazzler on 29 May 2008, 09:24:10
Who/what is Jeremy then Jay??

Do you have any details for him/them??
Thanks ;)
Title: Re: LPG conversion started
Post by: Elite Pete on 29 May 2008, 09:48:17
Dazzler PM sent :y

Is it not worth getting together as suggested and buying in bulk ;)
Title: Re: LPG conversion started
Post by: mkaminski100 on 29 May 2008, 09:51:00
Jay – Are pipes coming to and from the tank made from plastic or is it copper pipe covered in plastic?
I want to change my nozzle from Italian to Denmark version (used in UK). Do you know how much are these?

54p/ltr? You are lucky. I pay 59.9 now. Where is it going to end? When I came here 2 years ago, LPG was 32p/l and petrol 65p… And now, LPG cost almost the same as petrol 2 years ago.
I will have to think about LNG conversion now ;)

Title: Re: LPG conversion started
Post by: ricardo1500 on 29 May 2008, 09:55:36
I would also appreciate Jeremys contact details....converting my 2.2 is my next job :y
Title: Re: LPG conversion started
Post by: Kevin Wood on 29 May 2008, 10:11:03
For those interested in Jeremy's kits he doesn't seem to have any ebay items at the moment (they are flying out the door anyway based on a phone call on Tuesday) but the following link is the web page he refers to on his Ebay items (for the 8 cylinder kit - haven't managed to track down the 4/6 cylinder details but it's similar. His contact details are here also).

http://www.lpg.myzen.co.uk/ufit/

He was amenable to a discount for OOF when I looked into this about 6 months ago. My feelings were that a bulk buy of a load of kits was going to be difficult to organise because whilst some members were chomping at the bit others needed to time stumping up 700 quid carefully.

Having said that, he did mention the possibility of setting up a generic "OOF member's" discount so individuals could place orders as and when, and I think this might be a better way of doing things. Be sure to mention OOF if you contact him so he knows we are generating a serious level of interest.

Kevin
Title: Re: LPG conversion started
Post by: Elite Pete on 29 May 2008, 10:17:27
Would it not be better to cut out the middle man ::)
Title: Re: LPG conversion started
Post by: Dazzler on 29 May 2008, 10:24:20
Quote
Would it not be better to cut out the middle man ::)
Isn't it always ;D
Title: Re: LPG conversion started
Post by: mkaminski100 on 29 May 2008, 10:37:10
There is an official STAG distributor in UK and a producer above that. I can get a kit from them (Poland) but price difference between Jeremy’s set and the one from the producer is not that big. You can get is slightly cheaper in Poland but:
-there is an official AC STAG distributor in UK which will be pointed when anybody ask AC for a kit in UK. I would have to buy it for polish car with warranty valid in Poland.
-there is no English documentation attached. Only polish (I think that it’s not that big problem)
- nozzles, pipes etc are made for Polish customers and might not always fit (like Italian nozzle). You will have to be sure about those things.
-you have to add a delivery cost.
- UK certification which might cost up to £100 when bought from Poland and is negotiable when from Jeremy.
I think that it’s better idea to talk with Jeremy to get a discount  but I am also open to ask about V6 and 4 pot kits in Poland and UK.


Maybe it would be aesier if you cold make a list of people willing to purchase a set with specified tank type. It will be easier to give a number to negotiate a discount.
Title: Re: LPG conversion started
Post by: Kevin Wood on 29 May 2008, 10:50:21
Quote
There is an official STAG distributor in UK and a producer above that. I can get a kit from them (Poland) but price difference between Jeremy’s set and the one from the producer is not that big. You can get is slightly cheaper in Poland but:
-there is an official AC STAG distributor in UK which will be pointed when anybody ask AC for a kit in UK. I would have to buy it for polish car with warranty valid in Poland.
-there is no English documentation attached. Only polish (I think that it’s not that big problem)
- nozzles, pipes etc are made for Polish customers and might not always fit (like Italian nozzle). You will have to be sure about those things.
-you have to add a delivery cost.
- UK certification which might cost up to £100 when bought from Poland and is negotiable when from Jeremy.
I think that it’s better idea to talk with Jeremy to get a discount  but I am also open to ask about V6 and 4 pot kits in Poland and UK.

I tend to think that for the benefits (2 Year warranty valid in the UK, easy route to certification, excellent support) Jeremy's kits are a pretty good deal.

Kevin
Title: Re: LPG conversion started
Post by: Elite Pete on 29 May 2008, 10:51:45
Jeremy it is then ;)
Title: Re: LPG conversion started
Post by: mkaminski100 on 29 May 2008, 10:57:42
Quote
I tend to think that for the benefits (2 Year warranty valid in the UK, easy route to certification, excellent support) Jeremy's kits are a pretty good deal.

Kevin

You get 2 years warranty from producer as well, but I personally wouldn’t like to save £50-70 and lose Jeremy’s support, spare parts and to be forced to pay £100 for certificate and send parts back to Poland if broken. I am Polish and would like to help to get more for less but I think that it’s not worth. Jeremy is offering good prices and only thing I would like to do is to ask him nicely to give a discount for OOF users.
 :)
Title: Re: LPG conversion started
Post by: ricardo1500 on 29 May 2008, 11:01:31
This is the link to his old ebay add for 6 pot kit
http://cgi.ebay.co.uk/MOTOGAS-AC-6-CYLINDER-LPG-INJECTION-GAS-CONVERSION-KIT_W0QQitemZ330225319532QQihZ014QQcategoryZ36631QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 18:09:00
right, we are early finsihed.....

connected everything up today, filled it up with gas and started the calibration, it only shows one injector active!!!

initially we thought it was because i had the LPG injectors hooked up in the wrong sequence, changed that and still the same.....

Now i took the RPM feed from no1 coil, would that have had an effect?

if so where the hell do i get a RPM feed from?
Title: Re: LPG conversion started
Post by: Kevin Wood on 31 May 2008, 18:34:58
It's the green wire from the ECU again. Comes from X86 pin 25 on the ECU. This is the connector on the ECU that leads to the body loom rather than the engine loom.

Lambda sensors appear to be brown and black, one to pin 12 of X85 and one to pin 60.

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 20:09:03
my pin 25 is blank, nothing in it!!!!

got the lambdas sorted, this is just the last issue   >:(
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 21:32:49
this is getting more and more irritating..... >:(

found the RPM feed on X86, connected that, tries running uto calibration again....

this time i will start on 1 cylinder, than after 30 ses it will introduce cyl 3 and 5, then will shut off the calibration.

tried moving the injector blocks, still the same issue with the same cylinders, so the injectors themselves are ok.

Now getting an error message saying cannot communicate with cyl 2,3,4,5,6  >:(

all the wiring has been checked over by a mechanic, all of it is where is should be, no pipes kinked or trapped, i am at a complete loss  :-?
Title: Re: LPG conversion started
Post by: Kevin Wood on 31 May 2008, 21:55:01
Hmm. I wonder what's going on?

If you don't do the calibration and just start the engine are you seeing petrol injection timings for all 6 cylinders in the live data on the AC software?

Is the RPM and all temperature readings plausible?

What happens if you just switch it over to gas?

Can you click on individual cylinders and swap them to gas? Do they all respond without a misfire?

Kevin
Title: Re: LPG conversion started
Post by: Kevin Wood on 31 May 2008, 21:56:19
Might be worth doing a factory reset on the LPG ECU and starting again just in case it's got confused somehow.

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 22:13:59


If you don't do the calibration and just start the engine are you seeing petrol injection timings for all 6 cylinders in the live data on the AC software? yes, and i have a piece of diagnositic equipment called Launch and it confirms that what i am seeing is correct

Is the RPM and all temperature readings plausible? yes, temp is about 10 degree different

What happens if you just switch it over to gas? it switches straight back to petrol

Can you click on individual cylinders and swap them to gas? Do they all respond without a misfire? no, the only way i can get it on gas is when auto calibration is running

have done a reset via the AC software, and still no change
Title: Re: LPG conversion started
Post by: Kevin Wood on 31 May 2008, 22:35:55
Is the vapour pressure OK? Just wondering if the pressure is dropping when the LPG injectors fire and it's reverting to petrol.

The fact that it runs on petrol means the injector signals are getting to the gas ECU as they loop through it and back out to the petrol injectors.

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 23:00:58
pressure drops from 1.05 bar to .95 bar, not a great deal and well within range.

Lambdas drop from from .75 to .15 and then go back up but i put that down to the fuel change, it isn't running LPG long enough to settle down
Title: Re: LPG conversion started
Post by: Kevin Wood on 31 May 2008, 23:06:41
Have you got the lpg injector type configured correctly on the LPG ECU? I wonder if it shuts down due to excessive current through the injectors? I believe we configured Marie's ones as Valtek 3 ohm.

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 23:09:07
Quote
Have you got the lpg injector type configured correctly on the LPG ECU? I wonder if it shuts down due to excessive current through the injectors? I believe we configured Marie's ones as Valtek 3 ohm.

Kevin

yep, i have even tried other configs just to see if that helped.

all the sensors are set a they should be as well
Title: Re: LPG conversion started
Post by: Kevin Wood on 31 May 2008, 23:11:03
Hmm. >:(

Are there any faults stored on the LPG ECU?

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 23:14:43
Quote
Hmm. >:(

Are there any faults stored on the LPG ECU?

Kevin

No, and nothing on the petrol ECU either

This is the 8 cylinder ECU and loom we are using, but in the settings i have just changed everything 6 cylinder and the 7th and 8th injector leads have been tied back
Title: Re: LPG conversion started
Post by: Kevin Wood on 31 May 2008, 23:18:05
AFAIK the ECU supports up to 8 cylinders anyway, so you just have a few spare wires in the loom. Can't see what would cause a problem there. :-/

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 23:23:22
Quote
AFAIK the ECU supports up to 8 cylinders anyway, so you just have a few spare wires in the loom. Can't see what would cause a problem there. :-/

Kevin

the plan is tomorrow is to disconnect the battery, pull the connector on the ecu and try again, in addition we want to see it there is voltage on the LPG injectors, from there i don't really know
Title: Re: LPG conversion started
Post by: Kevin Wood on 31 May 2008, 23:46:09
Could there be a wiring problem with the tank valve circuit? Really clutching at straws now though.

I'd also check the connections to the control panel / level indicator. Had some weird things going on with Marie's install when we had a short here.

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 31 May 2008, 23:49:40
Quote
Could there be a wiring problem with the tank valve circuit? Really clutching at straws now though.

I'd also check the connections to the control panel / level indicator. Had some weird things going on with Marie's install when we had a short here.

Kevin

We can hear the valves clicking both front and back end, that was one of the thoughts i had, we have voltage at the switch and going from it once it is active.....

 
Title: Re: LPG conversion started
Post by: Jay w on 01 June 2008, 10:59:52
back on the case today, have checked everything and cant find any issues, all the connectors are in the right places, the voltages seem to be equal across all injectors, the tank and vaporiser solenoids are kicking in, all the live data is reading correct.

Kevin the only thing i did different to your suggestion was the lambda connections, i went with the blue wires that go to each one,  would that have made that much difference? we are still getting good data and it cycles from about .15/.45/.75 which i believe is the same as it going lean/rich

I am starting to think we may have a faulty component here, shame Phate123 isn't around, he has James's old CDX i could have seen if i could borrow his ECU for test  >:(

Giving up on it until next week now
Title: Re: LPG conversion started
Post by: Kevin Wood on 01 June 2008, 15:41:37
Sounds like you got the Lambda wires right. It was an educated guess which wire to choose as both disappear into the ECU with no indication which is the signal.

You could pop over one evening next week if you like, and we can scratch heads, but it sounds like there aren't a great many more things to try.

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 01 June 2008, 19:47:03
I will pop over on e night Kevin and we will have a look.

Just one query, what size did you drill the nozzels, according to the instructions it should be 2.2 mm but i seem to remember them being bigger on the elite  :-/

Title: Re: LPG conversion started
Post by: Kevin Wood on 01 June 2008, 23:26:40
James' nozzles were 2.5mm, as were Marie's on the 4 pot actually.

James' car complained about nozzles too large during calibration, but the injectors were flat out under full load at high revs and the durations matched the petrol duration pretty well so I'd say it was actually about right.

Kevin
Title: Re: LPG conversion started
Post by: JamesV6CDX on 02 June 2008, 01:21:29
Guys feel free to ignore this (it may be totally off the mark!)

But I have recalled back to what Mr DTM advised me when I was converting my 2.5 CDX, and I'm almost certain that the RPM feed from the ECU was pin Forty something, maybe 44?

Sorry I can't be more certain without more digging...
Title: Re: LPG conversion started
Post by: Jay w on 02 June 2008, 07:11:44
Quote
Guys feel free to ignore this (it may be totally off the mark!)

But I have recalled back to what Mr DTM advised me when I was converting my 2.5 CDX, and I'm almost certain that the RPM feed from the ECU was pin Forty something, maybe 44?

Sorry I can't be more certain without more digging...

Hi James, thanks for the comments.

Mines the 2.6 with the stupid double plug set up, on the old 5.1 setup i think you are right it is pin 44
Title: Re: LPG conversion started
Post by: lpgelite on 02 June 2008, 22:56:22
Easy to find RPM signal wire on 2.5 V6.

Pull back the protective sheath from the loom where it exits the ECU plug and search for the thin plain green wire. It's the only one without a second tracer colour.

A simple tap connector onto this wire shouldn't cause any problems as it's well protected from the weather in there, and you can easily bury it in the loom for a more professional look.
Title: Re: LPG conversion started
Post by: Jay w on 03 June 2008, 10:14:34
Quote
Easy to find RPM signal wire on 2.5 V6.

Pull back the protective sheath from the loom where it exits the ECU plug and search for the thin plain green wire. It's the only one without a second tracer colour.

A simple tap connector onto this wire shouldn't cause any problems as it's well protected from the weather in there, and you can easily bury it in the loom for a more professional look.

Mines a 2.6 with the later motronic ECU that has the double plugs
Title: Re: LPG conversion started
Post by: Marks DTM Calib on 03 June 2008, 14:08:18
RPM signal is the green wire to pin 35 of X86
Title: Re: LPG conversion started
Post by: Jay w on 03 June 2008, 18:07:25
we found it eventually, but i still has not cure the issue we have in not being able to get it running correctly.

Going to Kevins this week to let him have a noset over it and see if i have done anyting really bloody stupid that is causing this or is it potential component failure.

Title: Re: LPG conversion started
Post by: Dazzler on 03 June 2008, 19:24:15
Sounds like a bit of a head ache this one Jay ::)

Did you manage to get hold of the LPG man???? :-/
Title: Re: LPG conversion started
Post by: Kevin Wood on 03 June 2008, 19:40:33
Got a message. He's got a V6 kit with my name on it. :y

Kevin
Title: Re: LPG conversion started
Post by: Lazydocker on 03 June 2008, 19:51:59
Quote
Got a message. He's got a V6 kit with my name on it. :y

Kevin

What tank did you go for in the end??? And if you don't mind me asking... How much?
Title: Re: LPG conversion started
Post by: Dazzler on 03 June 2008, 19:53:36
Quote
Got a message. He's got a V6 kit with my name on it. :y

Kevin
Ive rung and sent an E-Mail, still nothing :(
Title: Re: LPG conversion started
Post by: Kevin Wood on 03 June 2008, 22:25:55
Quote
Quote
Got a message. He's got a V6 kit with my name on it. :y

Kevin

What tank did you go for in the end??? And if you don't mind me asking... How much?

Not sorted all the details out yet. Just asked him to put a kit aside.

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 06 June 2008, 00:36:18
At Last!!!!! all sorted....

Picked FFCGary1 up tonight and headed over to Kevin's, on the way i said it would be either something so stupid or something has broken......

It was the stupid one, i had connected the switched live to something that kicked out less than 12 volts at times, this meant the the ECU was shutting down, once we had that sorted the rest just fell into place.


However the heater pump packed up tonight, so we replaced that with some copper pipe, i don't think that repair held out as it looks like the car has dumped its coolant all over the place.

Big thanks to Kevin for his help and thanks for the food as well :y
Title: Re: LPG conversion started
Post by: Dazzler on 06 June 2008, 09:09:31
Quote
At Last!!!!! all sorted....

Picked FFCGary1 up tonight and headed over to Kevin's, on the way i said it would be either something so stupid or something has broken......

It was the stupid one, i had connected the switched live to something that kicked out less than 12 volts at times, this meant the the ECU was shutting down, once we had that sorted the rest just fell into place.


However the heater pump packed up tonight, so we replaced that with some copper pipe, i don't think that repair held out as it looks like the car has dumped its coolant all over the place.

Big thanks to Kevin for his help and thanks for the food as well :y
Glad to hear its all sorted Jay :y
Maybe would could meet up next week, for a chat and a beer ;)
Title: Re: LPG conversion started
Post by: Jay w on 06 June 2008, 09:28:39
Daz  :y no worries mate

Just spoke to Jeremy, he seems to be returning to normal now.

Just got to do the final calibration and increase the LPG pressure, Kevin, it was the allen key behind the sticker  ;)
Title: Re: LPG conversion started
Post by: Kevin Wood on 06 June 2008, 10:52:46
Quote
Daz  :y no worries mate

Just spoke to Jeremy, he seems to be returning to normal now.

Just got to do the final calibration and increase the LPG pressure, Kevin, it was the allen key behind the sticker  ;)

Excellent. :y Good to know.

It seems the Vapourisers are set a little low from the factory. Marie's was the same.

I'm upset to hear my copper pipe bodge didn't work. :(

It did about 20K on the Westfield with no leakage.  ;)

Kevin
Title: Re: LPG conversion started
Post by: psl on 06 June 2008, 12:51:47
Quote
Quote
At Last!!!!! all sorted....

Picked FFCGary1 up tonight and headed over to Kevin's, on the way i said it would be either something so stupid or something has broken......

It was the stupid one, i had connected the switched live to something that kicked out less than 12 volts at times, this meant the the ECU was shutting down, once we had that sorted the rest just fell into place.


However the heater pump packed up tonight, so we replaced that with some copper pipe, i don't think that repair held out as it looks like the car has dumped its coolant all over the place.

Big thanks to Kevin for his help and thanks for the food as well :y
Glad to hear its all sorted Jay :y
Maybe would could meet up next week, for a chat and a beer ;)[/quote]


Unless its a privet party I'd happily join you

pat
Title: Re: LPG conversion started
Post by: ffcgary1 on 06 June 2008, 14:40:03
Kevin, you will be interested to know that your temp repair did not fail. One the way back whilest moving over a speed bump the car bottomed out and ripped the coolant pipe off the vaporiser thus dumping the coolant out. I went over this morning and refitted it back on and refilled the system with water to get him back to plymouth today.  GUESS what he's doing this weekend. ::)
Title: Re: LPG conversion started
Post by: Kevin Wood on 06 June 2008, 15:21:44
 :o

<adds to list of "places not to mount the vapouriser">

Kevin
Title: Re: LPG conversion started
Post by: Dazzler on 06 June 2008, 15:24:39
Finally got hold of the man :)
£620 delivered with 80ltr cylinder tank :y

He did say that enough of us wanted the upright spare wheel tank, he would be able to get a bigger discount on them as it currently works out £100 dearer for that tank.
Title: Re: LPG conversion started
Post by: ffcgary1 on 06 June 2008, 15:26:56
Jason is going to make up a  "sump guard" to protect it and also help to keep the water off it. It should be ok there then. ::) :y  Thanks to you and the missus for a good evening we both had last night. Very much appricated. Top OFF,ERS.
Title: Re: LPG conversion started
Post by: Kevin Wood on 06 June 2008, 15:59:14
Quote
Jason is going to make up a  "sump guard" to protect it and also help to keep the water off it. It should be ok there then. ::) :y  Thanks to you and the missus for a good evening we both had last night. Very much appricated. Top OFF,ERS.

No problem. It was nice to see you. :y

Kevin
Title: Re: LPG conversion started
Post by: Jay w on 06 June 2008, 21:45:33
80 miles and about 2 hours later it is done, calibrated  :y

total deflection is less than 5%, no hesitancy just can't tell the difference and its quieter than if it was on petrol!!!

Sump guard is being made tomorrow, i was being a little over zealous with the bumps and it bottomed out, i am sure that with proper protection it wouldn't happen again

i am glad it is finished but i have to say it was easier this time round, however it has to be said......and witnessed by other members of the forum reading wiring diagrams is not my strongest point!!!!!

Thanks to everyone who helped out with this little project  :y
  
Title: Re: LPG conversion started
Post by: albitz on 06 June 2008, 23:45:38
i was talking to a mechanic mate a few days ago about lpg,and he reckons it dramatically reduces engine life,something to do with it not lubricating the upper cylinders. :-/
Title: Re: LPG conversion started
Post by: Dazzler on 07 June 2008, 01:59:27
Then why are so many LPG cars for sale with high mileage :-/
Title: Re: LPG conversion started
Post by: Kevin Wood on 07 June 2008, 02:02:53
Quote
i was talking to a mechanic mate a few days ago about lpg,and he reckons it dramatically reduces engine life,something to do with it not lubricating the upper cylinders. :-/

Some engines have problems with valve seat recession so you need Flashlube. AFAIK, that doesn't apply to any engines used on the Omega. No offence meant to your mate but I think mechanics probably have a long list of excuses for not touching LPG cars. Most of these are fiction or exaggerated.

Kevin
Title: Re: LPG conversion started
Post by: trebor on 07 June 2008, 10:36:20
Quote
i was talking to a mechanic mate a few days ago about lpg,and he reckons it dramatically reduces engine life,something to do with it not lubricating the upper cylinders. :-/

I'm on 185,000 miles.
 
It was converted over 5 years ago!
Title: Re: LPG conversion started
Post by: ffcgary1 on 08 June 2008, 00:09:39
Great news jay that you have got it finally sorted and calibrated, i have made the desicion that when i get back from my holiday i wil be ordering an lpg kit. just got to make a desicion on which type of tank to fit.  Hope the offer of help still stands .Well done again.
 :y
Title: Re: LPG conversion started
Post by: albitz on 08 June 2008, 00:16:52
Quote
Quote
i was talking to a mechanic mate a few days ago about lpg,and he reckons it dramatically reduces engine life,something to do with it not lubricating the upper cylinders. :-/

I'm on 185,000 miles.
 
It was converted over 5 years ago!
my mind is now at rest,and i will intend to have lpg on my next car.thanks.-sorry for thread hi-jack. :y
Title: Re: LPG conversion started
Post by: Jay w on 08 June 2008, 20:13:34
got the skid shield fitted today, it's not pretty currently but i didn't get a great deal of time on which to do it this weekend and it was a priority.

Basically i has situated the screw for the jubilee clip at the lowest point, this was what hit the bump, so i have moved that round as well,

Gary if you need a hand you know where i am mate  :y Dazzler same for you buddy :y
Title: Re: LPG conversion started
Post by: Dazzler on 08 June 2008, 20:24:56
Quote
got the skid shield fitted today, it's not pretty currently but i didn't get a great deal of time on which to do it this weekend and it was a priority.

Basically i has situated the screw for the jubilee clip at the lowest point, this was what hit the bump, so i have moved that round as well,

Gary if you need a hand you know where i am mate  :y Dazzler same for you buddy :y
But only till the end of June :(
Title: Re: LPG conversion started
Post by: Hani on 09 June 2008, 06:19:45
Hellow all 8-)
Hey all does any one knows where Outside Temprature Sensor Location in my car?
Because when i drive through some water it gets wet and gives Low Temprature Readings until it dry again,
i want to check it and replace it or isolate if possible,
can any one help me?  >:(
Title: Re: LPG conversion started
Post by: Jay w on 09 June 2008, 07:32:53
Quote
Quote
got the skid shield fitted today, it's not pretty currently but i didn't get a great deal of time on which to do it this weekend and it was a priority.

Basically i has situated the screw for the jubilee clip at the lowest point, this was what hit the bump, so i have moved that round as well,

Gary if you need a hand you know where i am mate  :y Dazzler same for you buddy :y
But only till the end of June :(

May have an extension on the contract that i am working on yet mate  :y
Title: Re: LPG conversion started
Post by: Dazzler on 11 June 2008, 09:17:56
Just ordered mine this morning :y
Title: Re: LPG conversion started
Post by: Elite Pete on 11 June 2008, 09:19:21
I will be ordering mine in 2 weeks ;)
Title: Re: LPG conversion started
Post by: Kevin Wood on 11 June 2008, 09:51:28
Most of mine has arrived. Just waiting on the vapouriser.

Kevin
Title: Re: LPG conversion started
Post by: Dazzler on 11 June 2008, 09:55:06
Im picking mine up next Tues, save on postage ;D
Title: Re: LPG conversion started
Post by: Kevin Wood on 11 June 2008, 10:26:36
I have to say, having gone for the 4 hole tank, whilst the tank itself is a lovely bit of kit, it's going to need a bit of messing about to fit it, unfortunately.

The filler pipe is a pre-made 12.5mm rubber hose with crimped connections - which won't be long enough to reach my filler, unfortunately, so I'm going to have to get a longer one made up.

In contrast, the single hole kits come with everything required, and the filler pipe is copper tube which you can cut to length yourself.

Kevin
Title: Re: LPG conversion started
Post by: Lazydocker on 11 June 2008, 10:38:55
Kevin, you can buy those pre made pipes in various lengths... Tinley tech definitely do them in longer lengths than you currently have. Perhaps i'll stick to a single hole tank when i get mine for ease because i want the filler in the bumper.
Title: Re: LPG conversion started
Post by: Kevin Wood on 11 June 2008, 10:45:06
Quote
Kevin, you can buy those pre made pipes in various lengths... Tinley tech definitely do them in longer lengths than you currently have. Perhaps i'll stick to a single hole tank when i get mine for ease because i want the filler in the bumper.

I'm sure it won't be difficult to resolve, but it's much easier when you can cut pipes to length. No 2 installs are the same, after all.

Jeremy said the 3.2 was right on the borderline with a single hole tank and, TBH, I only went for a 4 hole because I occasionally tow heavy loads where the engine is heavily loaded for long periods.

I would be inclined to try a single hole tank.

Kevin
Title: Re: LPG conversion started
Post by: Lazydocker on 11 June 2008, 10:53:16
I reckon I should be ok with the single hole, as mine's only the 3.0, but I'll chat with Jeremy when I've sorted the money for it. My only concern, like yours, is that I tow with it too. Although I did notice this weekend that with both the caravan and the box trailer I'd hired I didn't really need to give it the full beans to get a reasonable shift on! I was reasonably impressed with the mileage too, averaged about 18.5mpg, although I was fairly local.

It'll get a decent test in about a month when we go off for our main holiday!