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No power at idle
Not usually, unless there is a restriction that is intermittent, like something sucking up on the pick up. Same with overflow valve. That's why I said if you have checked everything....the stuff in a prior post.... 98% of the time it is one of two, pump or injectors. IF this came into the shop...- WillWagner
- Post #54
- Forum: M939 series 5 ton trucks
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No power at idle
P and MW are different animals, give me the number on the pump and i'll see if the parts are interchangeable. It is not uncommon to have an intermittant issue inside the pump. If you have checked all of the pressures, FSOV, restriction, air in fuel and throttle travel, wastegate and plumbing...- WillWagner
- Post #50
- Forum: M939 series 5 ton trucks
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No power at idle
Here's something I have not seen that it has been checked. The FSOV. If it has a broken link or not pulling up the correct distance....not enough OR too much.... The rack in the pump will not be able to go to full fuel, it will orient the dump slot in the wrong position and shunt the fuel away...- WillWagner
- Post #41
- Forum: M939 series 5 ton trucks