cpurvis
Lawn Addict
- Joined
- Aug 25, 2015
- Threads
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I'm pretty sure you have air in the injection system.
Additives are not the answer. Dirty injectors would have other symptoms.
Get a new fuel filter and install it correctly, which means bleed the air out of the system which may have gotten in while changing the filter. Nothing stops a diesel engine from running quicker than getting air in the injection system. I'm surprised that your engine runs at all if you just put a fuel filter on it without bleeding the system.
I can't tell you how to bleed your system. If you have a Kubota owners manual, it should tell you. If you don't have a manual, maybe this site has a pdf you can use. https://hostpdf.com/kubota-b4200-tractor-service-manual/
Good luck.
Edit to add: You probably ought to verify that the lift pump (the pump that sends fuel to the injection pump; you said you thought it had one) is working.
Additives are not the answer. Dirty injectors would have other symptoms.
Get a new fuel filter and install it correctly, which means bleed the air out of the system which may have gotten in while changing the filter. Nothing stops a diesel engine from running quicker than getting air in the injection system. I'm surprised that your engine runs at all if you just put a fuel filter on it without bleeding the system.
I can't tell you how to bleed your system. If you have a Kubota owners manual, it should tell you. If you don't have a manual, maybe this site has a pdf you can use. https://hostpdf.com/kubota-b4200-tractor-service-manual/
Good luck.
Edit to add: You probably ought to verify that the lift pump (the pump that sends fuel to the injection pump; you said you thought it had one) is working.