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James, Ford Technician
Category: Ford
Satisfied Customers: 3630
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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I have a 2000 ford f350 with the triton v10. yesterday it

Customer Question

I have a 2000 ford f350 with the triton v10.
yesterday it started bucking all of a sudden rpm gauge drops and jumps right back up it has gotten worse today caint drive it at all now without constant bucking grounds are good someone told me maybe crankshaft positioning sensor but truck still starts and idles fine any ideas
Submitted: 1 year ago.
Category: Ford
Expert:  James replied 1 year ago.

It sounds like a symptom from a failing fuel pump. In order to test it you will need a fuel pressure tester as well as be able to drive it while fuel pressure tester is hooked up.