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[Lazydocker]

If the car runs fine on petrol does that not point to an LPG problem? I would think the car needs to run properly on petrol before it can possibly run right on Gas?
Would be idea to measure what voltage there is at the spark plug?
As for spark plugs, I have seen where people have bought these expensive specific LPG plugs which being honest did not last too long at all.

I'm still leaning towards a coil pack problem but the OP needs to have the codes read to see what the EML is coming on for

[Darth Loo-knee]

I need to start being interested in LPG.... Its just most cars I have played with which haf LPG has been a nightnare

I do however bow to you Boyz with the LPG knowledge

[TheBoy]

I need to start being interested in LPG.... Its just most cars I have played with which haf LPG has been a nightnare

I do however bow to you Boyz with the LPG knowledge

Same principle, mon ami, a flammable vapour, mixed with air, ignited at the right time

[Darth Loo-knee]

I need to start being interested in LPG.... Its just most cars I have played with which haf LPG has been a nightnare

I do however bow to you Boyz with the LPG knowledge

Same principle, mon ami, a flammable vapour, mixed with air, ignited at the right time

Get off!
I need to dig up a thread to show you what I actually ment.... Some home DIY LPG conversations .....well enough said ......

[TheBoy]

I need to start being interested in LPG.... Its just most cars I have played with which haf LPG has been a nightnare

I do however bow to you Boyz with the LPG knowledge

Same principle, mon ami, a flammable vapour, mixed with air, ignited at the right time

Get off!
I need to dig up a thread to show you what I actually ment.... Some home DIY LPG conversations .....well enough said ......

Some Pro fitted AND CERTIFIED ones are a bloody mess as well. I saw one at the Oxford meet where the vapour feed could easily rest against the EGR...

[Dodge]

Like everything else, you get what you pay for.  I have had 2 Prinz systems done on 2 omegaS, one did over 200k the other over 300k and all I ever did was replaced normal wear and tear parts!

[Lazydocker]

Like everything else, you get what you pay for.  I have had 2 Prinz systems done on 2 omegaS, one did over 200k the other over 300k and all I ever did was replaced normal wear and tear parts!

But that doesn't mean the fitting is up to a high standard

I have, so far, only seen 1 "Professional" conversion (on an Omega) of a standard I would have driven away... The ones I have seen range from just untidy to down right dangerous, via purely wrongly fitted and not working properly

[Dodge]

Trust me, been on lpg for about 10 years now and all 3 of mine were spot on!

[Lazydocker]

Trust me, been on lpg for about 10 years now and all 3 of mine were spot on!

Good! I'd like to think that if someone is going to part with £1500+ that the work would be excellent It's not always the case though

[Dodge]

I agree, I recommend where I had mine done all the time and people turn a funny shade of grey when I tell them how much I paid.  Usually they come back sometime later and tell me how they paid £x less than I did and then wonder why they have to go back to the installer more times in the first 6 weeks than I have done in 10 years!
It's no wonder lpg gets a bad press!

[Kevin Wood]

I agree, I recommend where I had mine done all the time and people turn a funny shade of grey when I tell them how much I paid.  Usually they come back sometime later and tell me how they paid £x less than I did and then wonder why they have to go back to the installer more times in the first 6 weeks than I have done in 10 years!
It's no wonder lpg gets a bad press!

Agreed. LPGA UKLPG are doing more harm than good in that respect by not policing the members they promote, and refusing to help their disgruntled customers when installs go wrong.

The problem is, people go for LPG primarily to save money, so will generally go for the cheapest install they can find.

[Kevin Wood]

If the car runs fine on petrol does that not point to an LPG problem? I would think the car needs to run properly on petrol before it can possibly run right on Gas?

Absolutely right. The LPG system uses the same fuel and ignition system that is used when running on petrol, plus a few additional bits, so if it doesn't run well on petrol it sure as hell won't on LPG.

Would be idea to measure what voltage there is at the spark plug?
As for spark plugs, I have seen where people have bought these expensive specific LPG plugs which being honest did not last too long at all.

There is a folklore that says LPG is hard on spark plugs and ignition systems. It's true to say that it will need a stronger spark than petrol but a modern wasted spark or coil-on-plug system in good condition will deliver a much more powerful spark than is needed for either fuel  - until it starts to deteriorate.

Also bear in mind that the strength of the spark required is proportional to the pressure in the combustion chamber. It's very low at idle and under light load, and highest at peak torque, so as an ignition system degrades, it starts to falter at full throttle at medium revs first.

Back in the days of points and distributors people probably had more issues with ignition systems on LPG, and some of that folklore has stuck.

Ditto spark plugs. There really is no need for the iridium plugs that some LPG "experts" swear by. In the days of nasty mixer systems where the fuel mixture could go lean one minute and rich the next, spark plugs probably suffered. Not because they were running LPG but because the LPG system / install was sh1te and was overheating the plugs under some conditions and fouling them under others. So, again, what's still being perpetrated as gospel is no longer really relevant - if you are setting up LPG systems properly.

I need to start being interested in LPG.... Its just most cars I have played with which haf LPG has been a nightnare

I suspect the problem is that you are only seeing the ones with the problems.

Next time we're at a meet, give one of us a shout and we'll happily blather on about all the ins and outs of LPG systems until you are bored to tears.

[albitz]

I agree, I recommend where I had mine done all the time and people turn a funny shade of grey when I tell them how much I paid.  Usually they come back sometime later and tell me how they paid £x less than I did and then wonder why they have to go back to the installer more times in the first 6 weeks than I have done in 10 years!
It's no wonder lpg gets a bad press!

You might want to have a look at some of the installs carried out by Lazydocker,Kevin Wood and other forum members if you get the chance.All done to a much higher standard than any pro install I have ever seen.And a hell of a lot less expensive.

[Martin_1962]

Like everything else, you get what you pay for.  I have had 2 Prinz systems done on 2 omegaS, one did over 200k the other over 300k and all I ever did was replaced normal wear and tear parts!

But that doesn't mean the fitting is up to a high standard

I have, so far, only seen 1 "Professional" conversion (on an Omega) of a standard I would have driven away... The ones I have seen range from just untidy to down right dangerous, via purely wrongly fitted and not working properly

He said the P word, Prinz are probably the best system so tend to be used by the better installers.

[Dodge]

Thanks Martin, finally had an acknowledgement that I MIGHT have actually had a half decent installation!