Quote Originally Posted by Stickshift84 View Post
So I tried the oil in the plugs hole trick (wet compression test). Results did not seem to change... However I do not feel that with the design of this engine that a wet compression test actually works. Any thoughts on this?
It can work, but of course since the engine is horizontal it is hard to get oil at the top of the cylinder. The most common failure that causes this kind of drop in compression is a broken ring land.



In that case, the oil will make no difference. You could do a leakdown which can differentiate between a piston failure and a valve failure... but either way you are rebuilding.