Kubota M5950DT No Start

[baydog1]

Hello. I just bought a M5950DT that will not start. It cranks over but will not start. I don't have any fuel coming out of the injector lines at the injectors but have plenty of fuel at the injection pump when I remove the little drain plug at the top of the injection pump. The tractor has been sitting about 4 years. I installed a new supply pump. Is there any tricks to bleeding the fuel systems on these tractors or a certain procedure to bleeding the fuel system?
Thanks
Scotty

 

[007kubotaguy]

I believe your tractor has a cav injection pump. You should have two bleed screws on the side of it that take an 8 mm wrench. If you have good fuel out the lower bleeder and it won't pump chances are you have a bad injection pump. These pumps don't like to sit.

 

[baydog1]

I believe your tractor has a cav injection pump. You should have two bleed screws on the side of it that take an 8 mm wrench. If you have good fuel out the lower bleeder and it won't pump chances are you have a bad injection pump. These pumps don't like to sit.

Thanks. It's a Delphi pump. It has a 1 wire fitting at the bottom of the pump with nothing hooked to it. Is that fitting supposed to have 12 volt to it when key is turned on?

 

[007kubotaguy]

Thanks. It's a Delphi pump. It has a 1 wire fitting at the bottom of the pump with nothing hooked to it. Is that fitting supposed to have 12 volt to it when key is turned on?

Post a picture

 

[GeoHorn]

A tractor that age might have a fuel shut-down valve operated by a manual pull-knob and cable system…. Have you checked that connection and confirmed the valve is in the open position? (Newer tractors have electrical shut-down solenoids…..and the question would then be….Is the shut-down solenoid operating correctly?)

 

[baydog1]

A tractor that age might have a fuel shut-down valve operated by a manual pull-knob and cable system…. Have you checked that connection and confirmed the valve is in the open position? (Newer tractors have electrical shut-down solenoids…..and the question would then be….Is the shut-down solenoid operating correctly?)

Thanks. Is the shut down solenoid located on the bottom of the injection pump body? There is a plug on the bottom of the pump with 1 male electrical spade terminal sticking off of it but no wire is hooked to it. It does have a mechanical shut off lever also. Is switched 12 volts supposed to be at this solenoid?

 

[baydog1]

On the bottom of the injection pump is a pipe plug with a male electrical terminal that doesn't have a wire hooked to it. Is this a type of shut off valve?

 

[Russell King]

There is a stop switch (#60) involved on your tractor. I don’t know if that is attached to the injection pump but it usually is near the pump. I didn’t see anything on the pump itself but you can look at that yourself at Messicks or Kubota illustrated parts lists