Quote:
Originally Posted by teoman
Clean the engine bay and do a test drive to see where it is coming from?
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From the distributor shaft seal. I was overtaking a car once and in the middle, pa-chaff! Engine coughed and ran with three cylinders. I checked the distributor cap first only to discover it to be very oily from the inside.
Cleaned the cap, ran perfectly again.
It's around 4000 rpms where this happens. This is also where the best power would be.