I recently purchased a sailboat with a Yanmar 2gm
that has issues.
1. Very low compression
in cylinder 2 (cylinder closest to belts/ engine
label and farthest from transmission) as indicated in Yanmar
manual) -> engine
will not start unless cylinder 2 decompression lever pulled back. While the engine is running, when i lower the cylinder 2 decompression lever, there is a clanking noise
coming from that cylinder and the engine runs very rough. White smoke is coming from cylinder 2.
becomes thin after fresh oil
added and runs for a while. (I think this is a blown head
3. The fuel
injection adjustment screw is broken off (see photos)
I have the complete top end rebuild
kit and manual. I am planning to do the top end rebuild
. (Lots of videos online)
My question is: What should I do about the broken off fuel
I can see white smoke being ejected from the hole where this screw broke off while i am running the engine with cylinder 2 compression
lever down/ compressed. I suspect that this is leaking air and adding to compression issues.
Should i just replace the entire fuel injection pump
So far, I have adjusted valve lash to spec and changed oil several times. Cylinder 1 (closest to transmission
seems to run fine).