M5660 intermittent starting

[Karajr]

The engine will crank and take about 25 sec to start and other time is just cranks. I blew air back through fuel line at electric fuel pump any other ideas?

Thanks Jerry

 

[BigG]

Did you drain the fuel separator? Did you change the fuel filter? Do not look at it. Change it. If it has gotten water logged you will not see anything wrong. Put some diesel dryer in the fuel. I hope you did not blow through the pump itself. How many hours are on the tractor? Do you run it every day? Are you buying fuel from a busy station?

 

[Karajr]

Did you drain the fuel separator? Did you change the fuel filter? Do not look at it. Change it. If it has gotten water logged you will not see anything wrong. Put some diesel dryer in the fuel. I hope you did not blow through the pump itself. How many hours are on the tractor? Do you run it every day? Are you buying fuel from a busy station?

Fuel was drained from separator and filters changed. I did not blow air through electric fuel pump, tractor runs 30 hours a week on a golf course. Tractor has 1700 hours and 5 year old. I am thinks it could be the suction valve in fuel supply but it does not work the same as a fuel shut off solenoid from what I can tell.

Jerry

 

[BigG]

Fuel was drained from separator and filters changed. I did not blow air through electric fuel pump, tractor runs 30 hours a week on a golf course. Tractor has 1700 hours and 5 year old. I am thinks it could be the suction valve in fuel supply but it does not work the same as a fuel shut off solenoid from what I can tell.

Jerry

Does it run correctly after you get it running?

 

[Karajr]

Does it run correctly after you get it running?

Yes then problem start if it is shut off.

Jerry

 

[lugbolt]

I am betting on injectors bypassing excessive fuel.

but you can't test them, well you can if you're a dealer via kubota diagnostic software and/or sending the injectors out for testing.