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1

Omega General Help / Re: Engine revving!

« on: 25 March 2008, 08:40:50 »

MIght be worth blanking the egr in case that is sticking open.  Basically, air is getting in somewhere.

Thanks for your previous reply Theboy.

Is it possible then, to run with the EGR blanked off (bear in mind this valve is a new one) and if it is, how do you blank it?

Is there anything under the engine head cover that can course the problem?

Sorry for the what might be obvious, but I'm a Chippy, not a Mechanic!

All replies very gratefully received.

Rusty

2

Omega General Help / Re: Engine revving!

« on: 24 March 2008, 19:20:49 »

Fitted a new EGR valve  last week when the Garage done the nearside Exust gasket that was slightly leaking when cold! :-/

I am at a loss now!
Panic! Panic! Panic! 8-)

3

Omega General Help / Re: Engine revving!

« on: 24 March 2008, 19:10:40 »

Yes, I cleaned these and made sure that they were shutting too!

4

Omega General Help / Re: Engine revving!

« on: 24 March 2008, 18:37:07 »

Hi Rickboy
Because of my LPG problems i am only running on petrol at the moment, but it can happen running on gas too!
I have an older Emmegas system, ( gas is put into the air intake rubber tubes) you know, the one dealers don't want to know about!

It seems to me that it is almost like there is something switching the engine from low to higher revs all on it's own.

Rusty

5

Omega General Help / Re: Engine revving!

« on: 24 March 2008, 17:28:26 »

Sorry to be a pain, but I though it was all sorted!

 I Started the car up next day and it was running perfect!
 Anyway, I cleaned the throttle assembly and checked the vacuum pipes, but could not find anything untoward.

Used the car this weekend with no trouble.  

But it happened again today! fluctuating revving, then it would be ok again then revving again.

When I stopped and opened the bonnet could find nothing wrong.

In desperation, and maybe a little temper , I thumped the top of the engine and it stopped revving! all is right with the world again.

Does this point  to a direction to solve this problem? :-?

Rusty

6

Omega General Help / Re: Engine revving!

« on: 21 March 2008, 20:56:42 »

Ah! Looks like I have a busy day tomorrow!

 Maybe all this has something to do with my LPG problem as well!

Thanks for your suggestions, all of you, lets hope the rain holds off for the morning!

Rusty

7

Omega General Help / Re: Engine revving!

« on: 21 March 2008, 17:20:36 »

Hiya!
Because of my backfire problems using gas, i have had my garage fix the nearside exhust gasket that had a slight leak when cold, and install a new EGR Valve.
To be honest, the car has always had a tendancy to fluctuate it's revs when driving in traffic etc. So much so that i have often said that the car has a mind of it's own!
The work in the Garage still made no odds the my backfires! and have just installed another set of air pipes! I now concider the car a petrol only!
Rev range is from tickover to 2000+rpm

8

Omega General Help / Engine revving!

« on: 21 March 2008, 16:25:56 »

Hi all!

Can somone one point me in the direction as to why my omega 2.5 v6 is revving up all on it's own?

I have been having problems with my LPG convertion and had decided the car had to go.

 Now today, having decided to trade it in, i went out for a drive looking for her replacement.

The engine was revving quite high and on one occasion after i stopped and turned off the ignition, turned it back on again and it was revving up and down all on it's own!
 
Any solutions?
Rusty

9

Omega General Help / Re: Air intake hose/Gas convertion?

« on: 14 March 2008, 10:07:12 »

Thanks for the reply  rickyboy!

The site looks good, but I don't know whether I am up to further tinkering with the Omega!

I have spent so much money on her, including replacing her large  Continental Premium 225/55WR16 Tyres at a cost of £450. that I  have basically had enough. It is a pity, I like the car very much, but there is always a limit one can go.

Maybe someone else could pick up a bargain?

10

Omega General Help / Re: Air intake hose/Gas convertion?

« on: 14 March 2008, 08:33:27 »

Well!  Having chatted to a few gas installers about my problem.
 I have checked my air filter, installed anti-backfire washers, installed a new AGR valve and had both sides of the exhaust manifold gaskets done!

Yesterday on the way back from Bournemouth to Portsmouth running on gas it did it again!!

What makes it all the more difficult for me is that I live on the Isle of Wight and we have no LPG Installers and the ones on the South Coast are only interested in selling their own particular brand of conversion.

I have now fallen out with my Omega!

 Anyone want  to buy a 1999 Omega 2.5 v6 Estate? with gas conversion that wants sorting?
Rusty

11

Omega General Help / Re: Air intake hose/Gas convertion?

« on: 15 January 2008, 15:12:56 »

Hi all!
It's happend again!
I have a gas converted 2.5 v6 Omega Estate.
 For the second time, since i have owned this fine car, it has backfired on me while running on gas.
The trouble is that it has all but destroyed the offside air intake pipe! Whilst i have done a patch job of a repair, i really ought to get another air intake pipe.
Any suggestions as to where one can be purchased, without extending my mortgage?
Also, has anyone else suffered from this problem with their gas convertion?
Rusty

Thanks for your inputs to my problem.
 Now I'm sorted!. Thanks to "issunal" for the Airpipes and Ebay with the anti-backfire valves!
All fitted and working fine with a weekend in Cornwall under the cars belt!
Now, for the million doller question.
 Does anyone know where i can get my Emmigas convertion serviced? Bearing in mind i live just about as far southas one can be!
 I don't mind a day out or even an overnighter but somewhere withing a hundred miles would be good!
Rusty

12

Omega General Help / Re: Air intake hose/Gas convertion?

« on: 31 December 2007, 09:23:31 »

backfires  usually happen when tank is low on gas, or system is not hot!!! this is apart from ignition problems obviously but i suffered three till the man in the know said stop running it to low on gas!!! and he was right!!!

Hi!
I'll take note of what you are saying, but I think I was full on the two occasions it has happened to me. Maybe it was a change in liquid gas temperature?
 Anyway, thanks for drawing my attention to the fuel situation, I'll take notice, should it happen again.

I've been trying to download/upload, whatever it is, a couple of pics, so as to show my setup, but to no avail, is it that difficult?

Help! please in obtaining the replacement air pipes, it seems that evey part of an omega is obtaiable except the air intake pipes!

13

Omega General Help / Re: Air intake hose/Gas convertion?

« on: 30 December 2007, 13:32:48 »

first of all get some inlet stuff from a scrappy - if you're really stuck, post up pics of what is broken, and we'll see what we can do.

You should be able to get an anti backfire valve - but it definately sounds like it needs a tune up

I must have got confused, your first post said 2.6, which is yr 2001 onwards - hence why I suggested the upgrade. On a 1998 car, just patch it up and keep using it

Ah! Yes! The 2.6 was a slip of the finger. It is a T reg 2.5 v6 auto Estate.
 
I'll try the local scrappy, but last time i looked i was half full of pensioners trycycles!!
I'll try and get a pic though!
Rusty

14

Omega General Help / Re: Air intake hose/Gas convertion?

« on: 30 December 2007, 13:16:28 »

It sounds like you have a mixer conversion - I have said several times that this does not suit Omega's - for this reason.

In the short term, you need to approach an LPG supplier who should be able to supply you with a valve to fit in the inlet, which prevents damage in the event of a backfire through the inlet. I would also get the system tuned / checked, to make sure the mixture is somewhere close (it sounds rich).

Hiya! Thanks for the reply!

Yes, I think it is a lot to do with the Emmigas conversion.
But, as a 1998 Omega with 117,000 miles on the clock is valued at about £450 by Vauxhall. It would be a tad silly to spend too much money on the car.
 I can put up with the odd backfire, that has only happened twice in 7,000 miles, it just means I have to switch over to petrol pretty smartish!  [smiley=shocked.gif]

There is no LPG service point here on the Isle of Wight, but I have approached one in Stubbington who refuses to have anything to do with Emmigas! [smiley=sad.gif]

On another point,  I also have three small holes bored into each hose and these are sealed with tape (I now use masking tape) to help limit the damage done by a backfire. It did very much limit my recent backfire to a small "POP". but the damage done to the hose is from another time!
This all sounds pretty amateurish but needs must

15

Omega General Help / Air intake hose/Gas convertion?

« on: 30 December 2007, 12:18:33 »

Hi all!
It's happend again!
I have a gas converted 2.6 v6 Omega Estate.
 For the second time, since i have owned this fine car, it has backfired on me while running on gas.
The trouble is that it has all but destroyed the offside air intake pipe! Whilst i have done a patch job of a repair, i really ought to get another air intake pipe.
Any suggestions as to where one can be purchased, without extending my mortgage?
Also, has anyone else suffered from this problem with their gas convertion?
Rusty