I have to bleed the injectors every time I shut truck off to get it to start. I believe my injection pump is sucking air.
Is there a certain seal of o ring that could be the problem
Help with Injection Pump
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Help with Injection Pump
by Collers9640 » Wed Aug 20, 2025 1:38 pm
77’ W200 Cummins- Auto, BHAF, 4” Exhaust
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
- Collers9640
- fuel screw!!!!
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Re: Help with Injection Pump
by PToombs » Sat Sep 13, 2025 6:14 am
It could be leaking air in a fuel supply line, or at the filter heater. Best way I have found is to pressurize the tank with about 5-10 psi of air and check all the lines looking for leaks. It could be a return line leaking air also.
pete
Just enough power to break everything behind the crankshaft.
Just enough power to break everything behind the crankshaft.
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PToombs - 14mm rotor
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