lean mis fire on 3 then mulitpul cylinder z4 2.0

Dave900

Member
Hello everyone
this is an odd one i have a z with the n4620b engine and yes i know how i am missing two pots, but I'm not missing 100kg on my front wheels. thank you..

well it is mis firing on 3 and multiple cylinders. please help...
It has had new plugs coils
compression test , head gasket test , smoke test and new pcv or crank vent thingy.
all seams good could it be a silly sensor or is it going to be a vanos repair.
thanks and look forward to the missing pot jokes ta
 
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