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Go Back   Dodge Cummins Diesel Forum > 2nd Gen. Dodge Cummins 94-98 12V Forums > 94-98 Powertrain
94-98 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

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Old 05-10-2010, 11:07 PM   #1 (permalink)
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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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Old 05-11-2010, 12:04 AM   #2 (permalink)
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might have cracks in the fuel lines
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Old 05-11-2010, 12:45 AM   #3 (permalink)
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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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Old 05-11-2010, 12:52 AM   #4 (permalink)
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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
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Old 05-11-2010, 12:24 PM   #5 (permalink)
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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.
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Old 05-11-2010, 09:47 PM   #6 (permalink)
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Anyone know the napa number for transfer/lift pump
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Old 05-11-2010, 10:00 PM   #7 (permalink)
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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
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