Compression Test Results
Sure it will. It's SOP on small piston aircraft engine when doing annual inspections is to rotate the engine around; you will find spots of more and less cylinder leakage. Especially if they are worn some....but since the OP is not doing a real test, it is a moot point anyway.
For testing with air, it does not make not one hill of beans difference where the piston is in the bore, if both valves are closed.
The only exception to that would be if there was a crack or hole in a cylinder below where the rings are at TDC.
Even then, if the piston was at TDC and the hole under the rings, the leak would still show up, since the rings are not a complete seal.
I can sure tell some of yall have never done these tests on an engine before because you argue totally moot points. This is something that I have done and done and done and done and..........done.
If he does it as I outline, unless he is doing something WRONG, he WILL FIND the problem.
He doesn't need complex leakdown crap. ALL he needs to do is be able to apply air to the cylinder that's not firing. That's all. It's really that simple.
If you cannot make out where the air is coming from, you're doin it wrong OR you don't have enough air pressure. End of story.
This ain't rocket science, folks. Stop makin it so damned difficult for him to find an obvious EASY problem by arguing stupid points just to try to make yourselves sound smart. It ain't workin.
