Can anyone give me an explanation of a leak down test? I currently have a 454 that has little compression on the #7 cylinder. I haven't had a chance to check the actual number so I did the finger test today and it feels really low as compared to the #5 cylinder. This is a fresh rebuild with 25 hours. New pistons and rings and freshened peanut port heads. I am praying for a valve problem and not a cylinder.....
Thanks,
Ken