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Bored&Stroked · 12-11-2019, 09:05 AM

As CAS3 noted, if you're going to do a plastigauge check in the car, you need to support the crankshaft (put a bit of pressure on it to hold it up) - otherwise the weight of it will crush the plastigauge. Wipe all oil off the cap bearing surface as well. Obviously this isn't the best measurement method (but Hey, the engine is in the car), but it might help you diagnose the situation (if you find large clearances).

12-11-2019, 09:05 AM	#18
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,240	Re: 33 Rear Main Leak As CAS3 noted, if you're going to do a plastigauge check in the car, you need to support the crankshaft (put a bit of pressure on it to hold it up) - otherwise the weight of it will crush the plastigauge. Wipe all oil off the cap bearing surface as well. Obviously this isn't the best measurement method (but Hey, the engine is in the car), but it might help you diagnose the situation (if you find large clearances).