loosegravel
Just a retired mechanic who's having fun!
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- Enumclaw, Washington
Just some more thoughts to hopefully ease your mind. I know that I've mixed up the IP shims on a unit or two, and they still ran. They might not have run as efficient as they should, but none the less they still ran. By swapping those IP's around and cranking the engine over, you should be able to determine if you have a flat cam lobe or not. Hopefully not. The other thing is compression. We see piston ring seizure on occasion from rainwater intrusion, condensation in the combustion chambers, or whatever. While you're cranking this engine over with a good, fully charged set of batteries how does it sound? It should be a consistent sound with no change or "skipping". A skipping sound would indicate low compression in one of more cylinders. (That could also mean a valve issue in the cylinder head on one or more cylinders) When you get this engine running, another test for engine integrity is to remove the engine oil fill cap down by the dipstick. With the engine running you should be able to lay a piece of paper over that hole and it should hold it there from vacuum. If it blows it off, that's an indication of too much crankcase blow-by.