Our 1981 Yanmar
YSM 12 was hauled out of the boat last June, gone through by our mechanic
(50 years of experience), cleaned out with muratic acid as the head
had never been off and the water
jacket was loaded with salt
residue. Everything checked out on the bench.
We got her back onboard, all hooked up, begin trying to get her started and after many attempts and searching for the issue, we finally added an electric fuel pump
in line with the second filter, which then would go into the fuel lift
pump. She started after 3 or 4 cranks, and ran like a dream. High fives as it were between mechanic
Next day, I went to start her, and lots of motor
turning over, but no catching. She tried a couple of times, but no go.
When the key is on, the pump pushes fuel
through to the high pressure pump, but nothing.
Does anyone have any ideas? Batteries strong, alternator
and starter work fine.