The Ford Barn - View Single Post - Compression test and Vacuum test readings need help

Jim Brierley · 12-10-2019, 12:27 PM

It is undoubtedly valves. You can just force compressed air into the spark plug hole and listen for where the air leaks out, likely into the exhaust pipe.

12-10-2019, 12:27 PM	#12
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,088	Re: Compression test and Vacuum test readings need help It is undoubtedly valves. You can just force compressed air into the spark plug hole and listen for where the air leaks out, likely into the exhaust pipe.