12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

need some advice

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Old May 13, 2009 | 08:18 PM
  #1  
cummins95's Avatar
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From: Sullivan County, PA
Default need some advice

pretty sure my lift pump is on its death bed. i hear a ticking, its loudest when you listen from the drivers side front fender. i pushed the primer bulb n it gets quieter. how much is this going to cost me and whats the easiest way to change it. I was thinking pull the inner fender out. any suggestions would be greatly appreciated. one more thing, i wont have any extra cash for atleast a month, am i going to hurt anything by driving it until then?
 
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Old May 13, 2009 | 08:29 PM
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the easiest to pull it is pull the fender out and go in from there. they run ya about $100, you should be fine tyo run it for awhil since the engine is lubricated by engine oil. throw a quart of 2 stroke oil in the tank just for safety
 
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Old May 14, 2009 | 07:42 AM
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i have these
3918076

8 psi out
 
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Old May 14, 2009 | 08:57 AM
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umm 8psi?

These 12 valves run around 35 - 40 psi I believe.
 
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Old May 14, 2009 | 10:35 AM
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a normal stock piston style lift pump only has 8psi out pressure, these are for rotary type fuel injection pumps

not talking about pressure at the injector.
 
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Old May 14, 2009 | 08:38 PM
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no out of you lift pump into the p7100 is supposed to be at 50 WOT and 30-35 at idle with all lift pumps from 94-98.5 12v engines
 
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