Fuel prime problem - Dodge Cummins Diesel Forum
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post #1 of 7 (permalink) Old 05-10-2010, 10:07 PM Thread Starter
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Fuel prime problem

Would i lose my prime in my fuel system if my transfer pump was bad. I changed my fuel filter the other day and finally got i t started and it ran good then i parked it all weekend and started it up today and it ran for 30 seconds then died and would not start afterwards my spime pump is bad and its a pain to bleed this thing so any help is appreciated thanks

95 dodge 12v fuel plate and straight pipe

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post #2 of 7 (permalink) Old 05-10-2010, 11:04 PM
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might have cracks in the fuel lines

2012 cc dually 6speed, mini max, cooler delete, h&s intake horn, boost tube,5ich pipe,gdp big line kit Amsoil dealer since 2006
1996 12v 430000 miles. Built trans. 62mm hx 35 90hp injectors
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post #3 of 7 (permalink) Old 05-10-2010, 11:45 PM
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You may have an air leak some place. I would check the supply, return and pre-filter to LP hoses. Also, clean your pre-filter screen. You may want to remove the fuel heater.

Read this helpful writeup on the fuel system.
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post #4 of 7 (permalink) Old 05-10-2010, 11:52 PM
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squirt a touch of injector cleaner into a couple injectors... thats what i did when i lost my prime and it fired enough to suck more through

95 3500 2wd dualler.155k and 10k on tranny. no silencer ring. straight out the back.
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post #5 of 7 (permalink) Old 05-11-2010, 11:24 AM
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Quote:
Would i lose my prime in my fuel system if my transfer pump was bad.
The lift pump has non replaceable check valves that will allow fuel to flow back to the tank if they're bad. This allows air to enter and cause hard starting.
Rather than throw parts at it pressurize the tank to 5 psi max with compressed air then go hunting for the leak.

Bill
'95 2500 4wd auto
'95 3500 5 speed heavy hauler
Stock for one day
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post #6 of 7 (permalink) Old 05-11-2010, 08:47 PM Thread Starter
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Anyone know the napa number for transfer/lift pump
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post #7 of 7 (permalink) Old 05-11-2010, 09:00 PM
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The lift pump will cost you twice as much from Napa than from Cummins or here> REPLACEMENT FUEL TRANSFER PUMP ('94-'98) DODGE-Dodge Cummins Diesel Truck Accessories – Geno’s Garage

Bill
'95 2500 4wd auto
'95 3500 5 speed heavy hauler
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