[Richard Hudgins]

Hi Jack,

First thing to do is a leak down test. This will let you know where the problem is. Valves or rings.

The next thing would be to put a borescope in and look at the top of the piston for problems.

Sorry to hear of the problem, but you are going to have take it apart now matter what.

At least after doing the leakdown test, you will know whether you have to just pull the head or the motor.