Omega Owners Forum

Chat Area => General Car Chat => Topic started by: lorenzolen on 15 January 2012, 11:42:42

Title: LPG
Post by: lorenzolen on 15 January 2012, 11:42:42

Hi all could anyone  help with a problem i have with cold starting on petrol before gas switches over .L

Title: Re: LPG
Post by: feeutfo on 15 January 2012, 11:45:27

So not a gas problem at all then...?

What engine? Any codes?

Title: Re: LPG
Post by: Lazydocker on 15 January 2012, 12:02:29

As above, need some more info on the car and what the actual problem is

Title: Re: LPG
Post by: lorenzolen on 15 January 2012, 13:19:44

Sorry guys car is facelift 2.2.cd, auto  converted 9 months , no problem on gas but lumpy tickover on petrol starts ok but it not smooth until switch over,also cannot drive away until warmed up , i dont have access to code  reader . cheers. L

Title: Re: LPG
Post by: Lazydocker on 15 January 2012, 13:49:52

Who converted it? Multipoint or mixer system?

As an initial guess, and it is a guess because there isn't enough info yet, I'd say the long term fuel trims have drifted due to poor LPG setup

You need to get it on a decent code reader that can look at the live data and check the trims

Title: Re: LPG
Post by: TheBoy on 15 January 2012, 14:01:20

EML on?

Title: Re: LPG
Post by: lorenzolen on 15 January 2012, 15:11:00

Multipoint and yes EML on.

Title: Re: LPG
Post by: Lazydocker on 15 January 2012, 15:51:58

As said, you need to get the codes read :y

Was it a professional installation or DIY? And do you know what brand LPG kit it is?

My initial guess still stands from the info you have supplied so far... But it's still a guess ;)

Title: Re: LPG
Post by: lorenzolen on 15 January 2012, 16:17:11

Thanks it was pro job and im going back next week it will be interesting to see what they come up with .

Title: Re: LPG
Post by: feeutfo on 15 January 2012, 16:29:40

As Ld says, suspect long term fuel trim has drifted due to incorrect jet size on the lpg kit.
Enquire if they have a code reader that is fuel trim capable, or it will be a waisted trip. They, or someone, needs to confirm lt fuel trim before anything else. Got that t shirt.

Title: Re: LPG
Post by: Kevin Wood on 15 January 2012, 18:25:56

If it's fuel trim on LPG, running it on petrol only for a couple of days should fix the cold starting issues. LPG system needs a check over and re-calibration at the minimum, IMHO.

Title: Re: LPG
Post by: TheBoy on 15 January 2012, 19:03:15

Why am I thinking a possible CTS fault, rather than a trim issue ::)

Title: Re: LPG
Post by: Kevin Wood on 16 January 2012, 10:16:05

Quote from: TheBoy on 15 January 2012, 19:03:15

Why am I thinking a possible CTS fault, rather than a trim issue ::)

It's a possibility, that would be eliminated by running it only on petrol for a while. ;)

Title: Re: LPG
Post by: lorenzo.len on 16 January 2012, 15:44:26

Thanks all for all your feedback, especially to Kevin. Could you tell me which injectors for a King system, i.e what size, I need before I go back to the people who fitted the kit?

Title: Re: LPG
Post by: Lazydocker on 16 January 2012, 16:31:47

Quote from: lorenzo.len on 16 January 2012, 15:44:26

Thanks all for all your feedback, especially to Kevin. Could you tell me which injectors for a King system, i.e what size, I need before I go back to the people who fitted the kit?

They're the professionals, they should know ;)

But, TBH, I have no experience of those injectors so can't help out any more but if it were the ones I've used, about 2mm

Title: Re: LPG
Post by: lorenzo.len on 16 January 2012, 20:51:07

Thanks will let you how things work out  .regards L

Title: Re: LPG
Post by: deviator on 17 January 2012, 09:19:27

Where are you mate? There are a quite a few people about with code readers.

If you are close to Chesterfield, I'll offer my services for a voluntary donation to the Deviator tool & beer fund.

Title: Re: LPG
Post by: lorenzolen on 17 January 2012, 22:17:47

M6/J9 says it all.