Quote:
Originally Posted by Jac Mac
When checking cyls try to bring piston up in direction of rotation to TDC, you can get variation in readings if piston is rocked at TDC. Also doesnt hurt to re-test at BDC with valves closed, only way you will find cracked cyl walls etc.
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There is a valve open at both Bottom dead centres.
Exhaust is open on one BDC, and intake is open on the other BDC.