The Ford Barn - View Single Post - Compression Problem Revisited - Update

James Rogers · 03-10-2012, 07:57 PM

If you have leaking from one cylinder to another, you have a gasket problem or a warped head. The gap between 2 and 3 is such that only a warped head or very bad gasket would cause that kind of leakage. The reason you had the motor trying to turn is the seal on #3 is better than #2.
Another way to check this is to hold your thumb over the #3 spark plug hole and turn the engine with the starter. You should hear air escaping from the #2 spark plug hole if this is the problem.
The problem is not in the valves.

03-10-2012, 07:57 PM	#2
James Rogers Senior Member Join Date: May 2010 Location: Asheville,NC Posts: 3,104	Re: Compression Problem Revisited If you have leaking from one cylinder to another, you have a gasket problem or a warped head. The gap between 2 and 3 is such that only a warped head or very bad gasket would cause that kind of leakage. The reason you had the motor trying to turn is the seal on #3 is better than #2. Another way to check this is to hold your thumb over the #3 spark plug hole and turn the engine with the starter. You should hear air escaping from the #2 spark plug hole if this is the problem. The problem is not in the valves.