My Kubota L4701HST will run fine for about 15-30 minutes, full throttle, then will suddenly act as if under a great load and stall out. Will not recrank for 15-30 minutes. Then cranks and runs fine for a little while. Thermostat gauge not showing hot, but seems to take a long time to start moving up - It could be a bad gauge and is simply hot and not showing accurately. I also have been unable to get the DPF to regenerate. Has worked fine until lately. DPF warning lights are on , have tried to force it to run in Park, but no luck, will not ever clear when I run in full throttle. Run/-Min light goes off so it is getting enough RPM. I bought a new thermostat to install, but am now concerned that it is nothing to do with thermostat. My guess is it is the DPF possibly? Thermostat or gauge and thermostat both bad - Other thoughts? Also I have seen several posts on other sites regarding DPF deletion processes, but none that seem to work for Kubota. Anyone been able to make that work? Thanks for any assistance. PS - I would take to dealer but they are so backed up, would lose my tractor for a month or more while it sits waiting for its turn to get fixed.
Kubota L4701 Stalling under load
- Thread starter AtlantaVIking
- Start date
Check that your air supply is not blocked - air filter, mouse nests, etc. Ensure you have good fuel flow from the tank and out through the filter. After those are complete your options are much more limited. Your DPF is probably plugged to the point where the computer will not permit your engine to run. A Kubota dealer is about the only place for a fix. Good luck.
If your tractor has an electric fuel 'lift pump', make sure it is ALWAYS running with the key on.
My little G5200 began to 'stumble' under load... then a few weeks later would quit under load. A full tank of fuel made the problem go away....until the level in the tank dropped again.
It turned out that my electric 'lift pump' was getting weak and could not feed enough fuel to the engine under load when the fuel had to be moved uphill.
My little G5200 began to 'stumble' under load... then a few weeks later would quit under load. A full tank of fuel made the problem go away....until the level in the tank dropped again.
It turned out that my electric 'lift pump' was getting weak and could not feed enough fuel to the engine under load when the fuel had to be moved uphill.
North Idaho Wolfman
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From what your stating, sounds like it could be a fuel issue, like water in the fuel.
Have you changed / drained / replaced fuel filters?
And if you've went too long on a regen, you'll have to take it to a dealer to have a forced regen done on it, especially if it's thrown codes.
Have you changed / drained / replaced fuel filters?
And if you've went too long on a regen, you'll have to take it to a dealer to have a forced regen done on it, especially if it's thrown codes.