Hi There,
Got a new longer LPG cable come through today which meant I could sit in the car and have a look at what was going on etc.
Inbetween playing with VAGCOM and the LPG software i found some interesting and confusing stuff.
I could monitor the engine missfire counters. You get loads on Cylinder 8, but only if below 1500-2000 RPM. Over that and nothing and the count resets. Over 100+ and you get the car disabling the cylinder and it gets lumpy
This only happens LPG, all on petrol and it's fine. Switching one cylinder at a time to Petrol and the same thing. I tried all but running 8 in petrol mode with the rest on LPG and the same missfires when the revs are below 2000rpm!
The intake switchover is ~5500 so the 2000rpm mark isn't to do with that.
I had another go at tuning the the LPG system. It still seems to be burning rich as after heavy revs I get an exhaust pop, which is usually indicative of overfueling!
It's a real head scratcher!
Lee
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