fuel pump problems - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 05-01-2008, 06:53 PM Thread Starter
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fuel pump problems

installed the raptor 150 yesterday and the truck started fine and had 30 psi + of fuel pressure, it ran for about to mins and then died, could get it started for a few seconds then died again, i called tech suport and the guy told me that it was more then likley the lift pump in the tank, i looked on my motor and did not see a lift pump, so he told me to order a draw straw kit and it should fix it. when i took the filter cap off and ran the pump, it would spit a lil bit of fuel then air, i bleed all the lines, will the draw straw fix it or could there be any other problems, need help asap!!!!! thanks

97 f 250 xlt 4 inch lift, 36/15.50 tires, hypermax kit with sledghammer turbo, swamps 355mm injectors, compitition fuel system,bdp stealth pumps oil system, head studs, custom 4 inch exhaust, edge evo and ez stack
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post #2 of 5 (permalink) Old 05-02-2008, 03:46 PM
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TOO MUCH PRESSURE!

10 PSI MINIMUM PRESSURE AT WOT
20 PSI MAXIMUM PRESSURE AT IDLE

You might of blown the VP44... Stock pressure they typicall are around 14-15 PSI because of the overflow valve...


Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
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post #3 of 5 (permalink) Old 05-02-2008, 04:02 PM Thread Starter
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its not getting steady pressure to the IP i looked in the fuel filter canister and its jus purging fuel and it only ran for about 5 to 10 mins is that enought to hurt the IP

97 f 250 xlt 4 inch lift, 36/15.50 tires, hypermax kit with sledghammer turbo, swamps 355mm injectors, compitition fuel system,bdp stealth pumps oil system, head studs, custom 4 inch exhaust, edge evo and ez stack
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post #4 of 5 (permalink) Old 05-02-2008, 04:09 PM
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VP44 wont start at pressure above 20 PSI...

Drop your pressure down (~15-17 PSI) and reprime the system...
http://mopar.mopar1973man.com/2002-d...l%20system.htm

Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
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post #5 of 5 (permalink) Old 05-02-2008, 04:50 PM Thread Starter
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it still wont start and run i dont think it would be the IP cause its only got about 3000 miles on it i droped the pressure way down and bleed the system it started and ran fine when i first installed it what could of happened any more ideas :shrug:

97 f 250 xlt 4 inch lift, 36/15.50 tires, hypermax kit with sledghammer turbo, swamps 355mm injectors, compitition fuel system,bdp stealth pumps oil system, head studs, custom 4 inch exhaust, edge evo and ez stack
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