I need some help. The 35 year old Yanmar
YSM8 in my Pacific Seacraft
25 (s/v Serenity) will not start. The engine
last run about 5 years ago. It cranks over well. I have tried the following:
1. New fuel
lines where needed and filters. They were a mess from tank to engine
2. Cleaned out the exhaust
. A filthy, rusty, carbon, cruddy mess.
3. Removed the valve cover (I read it somewhere but don't know why. Had to try).
4. Used WD-40 as starting fluid. Nothing.
5. I tried to remove the injector body but it is really stuck in there.
6. High-pressure fuel pump
emits very small amounts of fuel
intermittently, but seems high pressure. I don't have a gauge.
There seems to be decent compression
when I try hand cranking, kinda like a lawnmower resistance, but a lot heavier flywheel. The compression
release seems operable and not engaged. The shut off cable is not engaged (maybe stuck inside?). My next suspect is compression.
There is also decent suction at the intake, but not enough to cause a hickey on my forearm or anything. She definitely breaths. I don't see a glow plug
or anything electrical
, but there might be an electrical
I honestly do not know what to try next. Is there a way to use another starting fluid or light it off somehow? Good fuel lines bleeding method? If anyone has any ideas, I would love to hear them.