Is this typical of Vanos?
Now that the colder weather is back I have the same issue as I did last fall and winter.
At temperatures starting somewere below 15C-20C (60F-65F), when I start in the morning I get missfire on cylyinder 3 (with cutoff). Just #3. No other codes.
After warmed a bit an "off/on" will often completely clear the rough idle. If I just start driving, usually the light doesn't come on. If I idle for it to warm up it does. Either way it's missing. Sometimes worse than others
The plugs have been replaced since last year and I swapped the number 3 coil with number 1. Also a new DISA unit this summer and there are no vacumm leaks. Thorough smoke testing was done as hoses ccv, etc were all replaced last January.
Always #3 and never any other. Is that typical?
Last edited by idjit; 09-19-2012 at 09:38 AM.