Quote:
Originally Posted by peter f
BUT...is it possible all that cyl 2 mess (and indeed the equivalent plugs, when examined, they tell the rich mixture story) could be due to some air leak due to a "vibration" of some sort of the throttle butterfly itself?
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IMO, absolutely. I think it's going to end up being something simple and very likely mechanical. But there's a lot you can still do.
- Unplug the steppers and see if the idle stops hunting. If so, then you know the steppers are driving it and you need to look for things that would make the BMS want to move the steppers.
- unplug one injector. The BMS will compensate. See if the idle hunts with the right injector working and not with the left injector working.
- If you can put the L-emulators back on and the log shows that there is still a wandering control factor, then the Lambda input isn't the only link in that chain.
- Stuff like that. Play around.