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Discussion Starter · #1 ·
All,

A friend and I were working on the cummins the other day(filter cleaning and adjust the exhaust). My buddy started it up and rev it a couple times, but when he pressed the pedal all the way down it revved really really high and than just shut off. Any ideas why it did this? It been running great since, no issues so far. But i still want to know why it did this?
 

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Maybe a failing lift pump? Does it die or act like it wants to die whenever he is at WOT driving? Thats what mine started doing right before the lift pump actually failed. It could supply enough fuel for normal driving, but when you got in it the main pump would just suck the line dry and the lift pump couldn't keep up.
 
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