31-12-2019, 09:46 PM
Compression tests done with open throttle.
Gauges did not come into general use until crank handles disappeared. Much can be learned from the handle. Ring leaks can be heard at the oil filler, and valve leaks sometimes at the carb or exh outlet.
My experience has been that failing valves seem to rob power far more than leaky rings.
Whilst it is a pain to adjust valves, not too difficult to check clearances.
Gauges did not come into general use until crank handles disappeared. Much can be learned from the handle. Ring leaks can be heard at the oil filler, and valve leaks sometimes at the carb or exh outlet.
My experience has been that failing valves seem to rob power far more than leaky rings.
Whilst it is a pain to adjust valves, not too difficult to check clearances.