I am a lying liar who lies. Back in this post I said that the #3 cylinder had compression. But before tearing into the engine I decided to do a compression check on all the cylinders
The results were depressing:
- 20psi, oil had no effect
- 40psi, 90psi with a few squirts of oil
Looks like my thumb over the spark plug hole is not very finely calibrated. Looks like #3 has something bad wrong with it and #4 probably has either worn or broken rings. Peachy. Lets look into the dead jug first. Valve cover removal time! At least it is easy to do.
Well that is a problem if not the problem. The pushrod for the #3 intake valve is totally out of sorts. I can’t tell if something is wrong down below or the rocker is messed up. It is hard to see in this picture but the rocker arm looks a little odd. Perhaps the pushrod beat on it. I will have to dig further.
Confession time. My knowledge of the guts of OHV engines like this is largely theoretical. I have torn into several overhead cam engines and flatheads but never rebuilt a V-anything. So I will have to learn as I go. Should be fun.