Posted by KirbyandLugnut on April 24, 2023 at 16:38:08 from (174.206.103.37):
I have a nice new holland td80d tractor that I inherited from my dad about 4 years ago. the tractor is about 15 years old, has a tier 2 engine in it, so no DEF. Machine has never been really worked hard and has only 500 hours on it. Recently the engine started surging, losing power and sometimes quits completely. It acts like its starving for fuel, so did all the easy stuff, changed fuel filters and cleaned out the screen on the lift pump. No change so i drained the tank, cleaned it out and put fresh fuel in it. still no luck. finally replaced the lift pump, still no joy. funny thing is it actually runs better cold, as it warms up it gets worse. I read thru the troubleshooting section of the shop manual, and it points to trouble with various parts of the injection pump (it's a Bosch rotary) but i have a hard time believing that a machine with only 500 hours already has issues inside the injection pump. Any thoughts on what I'm missing or what next steps should be? Anyone know a good tractor repair guy near Williamsburg, Va. I'm a decent hobby mechanic, but tearing into an injection pump is beyond my skills. I hate the thought of taking it back to the dealer.
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