Re: Cylinders Low In PSI ? (HELP)
My opinion he's done all the diagnostics necessary. Found low compression in two cylinders on opposite sides of the engine. Did a wet compression test to rule out cracked pistons, broken rings, cracked block ( no appreciable change in compression when oil introduced to cylinders). Had no excessive noise from bottom end or top end, pretty much ruling out broken valve spring or valve lock. Problem should be from the deck of the block up and not anything that would make alot of clatter like a dropped valve ( he would have pretty much zero compression anyway). No matter what, In my opinion, he has to remove the cylinder heads ( both). After doing that he should have them inspected and reconditioned ( or exchanged). Then the the problem will show itself. I'll bet it's head gaskets and not multiple valves on opposite sides but who knows. Either way, if he wants to fix it the heads have to come off. He said it did get overheated. He never winterized the thing. Could all come from cracks, leaks, problems in cooling system. Whatever caused it in the first place needs to be corrected as well. My 2 cents.
