Originally Posted by jamal
You need to do a leakdown test. I've found that things have to be pretty bad (like a missing chunk of ringland) to see much of a drop in compression.
True - would a leaky valve seal show up on this? If a leak down test returns a bad value - how does one determine which part of the motor is to blame?
It's obvious to me something isn't right internally - rings or valve guides/seals - one way or another it needs to come out.