I started my Yanmar 4JH4-HTE 110 HP after ~2 months of sitting unused. It cranked up in about 1 second and purred like a kitten for about 5 minutes while I was getting ready to shove off, then died abruptly. First thought was forgot to open the fuel valve, but it was open. When I try to crank it now, it starts up immediately, and respondes to the throttle in neutral as long as the starter is engaged, but as soon as I release the key back to "ON", it dies. I've checked and there doesn't seem to be any air in the fuel lines, and the pump on the fuel filter feels normal. The generator runs fine so I don't think there's a problem from the tank to the Racors.
I'm thinking that the fuel shutoff solenoid may be open when the switch is in the "START" position, but closes when the switch goes to the ON position. I guess there are any number of automatic shutoffs that can occur if a sensor fails (like overheating, ??? else).
When I manually close the fuel off (like you would to manually shut down the engine) and crank, it's obvious that there is no fuel getting to the engine. When I crank it without shutting of the fuel manually, I can hear the engine firing, and if I advance the throttle it runs faster as long as the key is in the START position.
I'm running out or things to try...anyone have any suggestionsf?
Thanks in advance,
Brunswick, GA, USA