fix or rebuild?
My name is Dave and im new to the forum. 2 months ago I bought a 78 f150 4x4. I got a problem. I noticed the other day that the passenger side exhaust was smoking at idle and also sounds kinda "puffy". A friend of mine ran a compression test, and getting around 90 psi from every cyl, but the front cyl on passenger side is at about 60 psi. do I have a valve or ring problem, should I fix or rebuild?


