Is 12% really that bad? Considering the constant air pressure is bleeding past piston rings and maybe valves, is not how the engine actually operates, I think you real loss number is less than that when combustion is measured in tenths and hundredths of a second?
What were your other cylinder leakdown numbers?
Well only checked the bad one. Guess I should. But an update is its not the rings. I just have had it off a bit from TDC. The sure is actually coming out the exhaust. Hear it like a tire leak...lol. This 440 has the oil filler on top #1&2 so you hear the air passing by making it sound like the crankcase. But it got worse after I did a wet test again. Now it's reading 45psi with 90psi feeding. So that exhaust valve has to be deal with. Makes more sense now with my carb sir problems I would say?
