Hey everybody. I'm new to Kubota diesels. I have pretty good knowledge of the automotive industry as a technician for over 17 years. But I've just got this kubota D902 and it runs great at idle but under a load it likes to bog down quite a bit and I strongly feel like this is not normal. Mind you it is not under full load when this takes place. I've checked and replaced all filters, has new gas, checked for a restriction in the exhuast (its fine) and performed valve adjustment on it. Any ideas are much appreciated. Thanks.
Kubota D902 Bogs down under load
- Thread starter MotorWizz
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North Idaho Wolfman
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OH I think I know exactly what your problem is! 
It will run much better!
Ok now if that was just a typo, then your problem lies in fuel delivery.
One simple test, remove the feed line to the injection pump and feed it fuel from a bottle and hose gravity feed from above the injection pump.
If it works then there is a problem with fuel delivery to the pump, if it doesn't help then it's fuel delivery after the pump.
Could be clogged injection pump, or clogged injectors.
Try using diesel,
It will run much better! Ok now if that was just a typo, then your problem lies in fuel delivery.
One simple test, remove the feed line to the injection pump and feed it fuel from a bottle and hose gravity feed from above the injection pump.
If it works then there is a problem with fuel delivery to the pump, if it doesn't help then it's fuel delivery after the pump.
Could be clogged injection pump, or clogged injectors.