Quote:
Originally Posted by cscmc1
I am hoping to hear that it's not uncommon to have a bad head gasket cause knocking. I would be delighted to get away with removing and checking the head and throwing a new gasket in!
As always, thanks in advance for any input.
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Engine oil getting into the combustion chamber would cause pre-ignition, which would make itself know with knocking and smoke.
IIRC this is common failure on the OM602, and the effected cylinder is #1 - all of you symptoms point to a failed head gasket.