Those who run LPG converted 2.2's

[hunker7]

here is a video. 3rd gear pull (well I tried at least )

https://www.youtube.com/watch?v=S0JzqTHcXmQ

[hunker7]

Petrol seems to be on the rich side too now that I had a look. 3rd gear and it goes to 0.76 Lambda. PRJ have said in other thread anything less than 0.78 you loose power massively. So maybe that's why it's been messing with LPG too?

[GAIEL100Q]

Hello i Am new here and i Am sorry for my bad English
But wen the presure raises in the Intake you get negatieve presure against te lpg injectors
Can that reduce lpg flow to te intake ?
Like petrol for each bar boost the fuel regulator raises 1 bar
Maybe i Am totaly wrong

[diesel des]

Petrol seems to be on the rich side too now that I had a look. 3rd gear and it goes to 0.76 Lambda. PRJ have said in other thread anything less than 0.78 you loose power massively. So maybe that's why it's been messing with LPG too?

Maybe. Now the Lpg times are greater are the Lpg mixtures ok? Try cleaning the maf?

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[diesel des]

Hello i Am new here and i Am sorry for my bad English
But wen the presure raises in the Intake you get negatieve presure against te lpg injectors
Can that reduce lpg flow to te intake ?
Like petrol for each bar boost the fuel regulator raises 1 bar
Maybe i Am totaly wrong

The Lpg pressure also increases with boost like petrol does so no problems there.

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[hunker7]

Maybe. Now the Lpg times are greater are the Lpg mixtures ok? Try cleaning the maf?

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I'll test for leaks and clean the maf while at it. Lpg mixture barely goes rich ever (0.97 lambda maximum) and is lean most of the time.

[diesel des]

Then you need to increase the multi. This is a basic scaler

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[hunker7]

OK, so I leave everything as is in increase that and see how it runs?

[diesel des]

Yep try that. It will make it more rich everplace.

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[hunker7]

OK. I went a bit violent with the multi but it's definately helping. It is extremely rich at idle now and too rich at WOT as it starts shaking pretty badly. So I guess now I can just adjust each point separately to get it running right?

Last 3 points are now into 20ms last one being 29ms.

[diesel des]

Try a compromise multi as this will reduce the amount of tweaking the graph points need.

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[hunker7]

I'll get dad behind the wheel tomorrow night and go for a drive on M25. I've now adjusted the idle and that's stoichiometric now, I'll leave it as it is for now.

What could cause for it to go that badly? She was running fine before

[diesel des]

I'm not sure. The Lpg system can take a while to bed in the injectors and such but if it's running odd on petrol too maybe there is another issue?

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[hunker7]

On petrol she shifts it's just that point where it goes a bit too rich that bothers me. Otherwise boost is there and all.

[hunker7]

I've noticed idle on petrol is slightly lean occasionally so I'll get a compressor off my mate and get it properly tested. Now that it's adjusted I must say it's running much nicer than it did before ir started to not work at all, so possibly it's been getting worse with time and I just didn't notice till it went completely bad. I don't look at aft gauge all the time.