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iep
22-04-2008, 11:09 AM
Maybe this is nothing but I have noticed that my VR6 Golf produces a lot of steam from the exhaust (not white smoke). The last set of plugs also all came out a bit black (light coke deposits) which I believe suggests a rich mixture.

No engine code faults and the lambda values cycle nicely from 0.9 to 1.1 on a long journey inc town driving. ISV is clean and appears to be working from vag-com (duty cycle value changes with throttle) .

What else affects mixture on these cars?

Cheers.