310a backhoe high idle!!

[onalaskahoe]

I have another question for you. I ran the backhoe today and i started feeling the rpm rise. I stoped the machine and found that the kill switch did not stop the engine, it slows down but does not kill it. It was very low on fuel so i added some fuel. I started it again and it wants to go to a high idle with ignition on 2000rpm, I have checked the throttle rods and all is looking and working fine, when i kill ignition it gets low but does not stop I had to let out clutch to stop engine. Just started today and I don't know why?

Any thoughts?

 

[Tx Jim]

Governor in inj. pump gone bad. Pump needs TLC.

 

[onalaskahoe]

why did the kill solenoid not work

 

[onalaskahoe]

I understand why the govenor would cause a run high idle, but why would the kill not work?

Could it just be a linkage inside that has come undone?

 

[JDemaris]

The shut-valve in the pump is totally hydraulic. If fuel gets air in it, the shut-off valve will not work. When you turn the key to "off", the electric solenoid collapes and allows a strong spring to push against that valve. If it has air around it, the engine will keep running and surging.

From what you describe, it sounds like a typical case of the injection pump starving for fuel and getting air into it.

In regard to the plastic governor weight retainer ring if your pump hasn't been updated? If broken, it can indirectly cause the engine to surge and quit - but it should not effect the shut-off control.

 

[onalaskahoe]

I do think it was running out of fuel when this happened. could low fuel cause the engine to run high rpm? and also make the kill solenoid not work?

is that what you are saying? and if so what is the best way to correct this?

 

[onalaskahoe]

Can you tell me more about this and how to correct it?