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Author Topic: LPG  (Read 1925 times)

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lorenzolen

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LPG
« 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
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feeutfo

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Re: LPG
« Reply #1 on: 15 January 2012, 11:45:27 »
So not a gas problem at all then...?

What engine? Any codes?
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Lazydocker

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Re: LPG
« Reply #2 on: 15 January 2012, 12:02:29 »
As above, need some more info on the car and what the actual problem is
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lorenzolen

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Re: LPG
« Reply #3 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
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Lazydocker

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Re: LPG
« Reply #4 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
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TheBoy

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Re: LPG
« Reply #5 on: 15 January 2012, 14:01:20 »
EML on?
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lorenzolen

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Re: LPG
« Reply #6 on: 15 January 2012, 15:11:00 »
Multipoint and yes EML on.
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Lazydocker

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Re: LPG
« Reply #7 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 ;)
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lorenzolen

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Re: LPG
« Reply #8 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 .
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feeutfo

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Re: LPG
« Reply #9 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.
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Kevin Wood

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Re: LPG
« Reply #10 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.
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TheBoy

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Re: LPG
« Reply #11 on: 15 January 2012, 19:03:15 »
Why am I thinking a possible CTS fault, rather than a trim issue ::)
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Kevin Wood

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Re: LPG
« Reply #12 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. ;)
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lorenzo.len

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Re: LPG
« Reply #13 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?
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Lazydocker

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Re: LPG
« Reply #14 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
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