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

98 12v low fuel pressure

Old Oct 6, 2014 | 12:55 AM
  #11  
Slim Whitey's Avatar
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Yeah. Pull the cam out and check the lobe with a dial indicator and v block. Or with a caliper. If its within profile spec you're good.
 
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Old Oct 6, 2014 | 09:59 PM
  #12  
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So have you touched you return OFV or have you thought about replacing the Lift pump ?

Dont touch the Ip until you get through the basics first .... ..

pullin the Ip apart on a whim lilke that is a waste of time .... the cams dont just suddenly go out ..
 
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Old Oct 7, 2014 | 04:34 PM
  #13  
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i pulled the lift pump apart the other day and the screen was totally clogged to ****. I just bought some airdog 2's cause i rather not put the stock lift pump and filter setup back in and i had some extra cash.
 
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Old Oct 7, 2014 | 11:39 PM
  #14  
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Should have bought a first gen.
 
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Old Oct 8, 2014 | 05:06 PM
  #15  
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Originally Posted by W350-4x4
Should have bought a first gen.
LOL.. All trucks have there issues bud .. even the 4th gen trucks have issues ... like CP3's that crap out and are 1500 each to rebuild or buy rebuilt
 
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Old Oct 8, 2014 | 05:10 PM
  #16  
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Originally Posted by vfizzano
i pulled the lift pump apart the other day and the screen was totally clogged to ****. I just bought some airdog 2's cause i rather not put the stock lift pump and filter setup back in and i had some extra cash.
Well that was lilkley the issue .. no need to go all out .. it is nice to have a possible electric back up ... if the airdog goes out your screwed ..

Manny guys run a dual feed system ..

Run a stock Lift pump and an electric fuel pump, Put a Y in the feed side of the IP feed line and have a dual feed system .. ( typically they place a Check valve in the out going side of each pump so if the pump fails the other pump wont just push fuel backwards through the bad pump ) ..

Quite Effective, and always have a back up .. can use the electric to prime system and such also ..
 
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Old Oct 8, 2014 | 08:01 PM
  #17  
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I think I'm gonna do that. Not sure why it's taken four years to decide to, but. It is what it is.
 
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Old Oct 9, 2014 | 02:26 PM
  #18  
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I will be doing it as soon as my HG is done this spring .. gotta save some cash $$$$ then I can play this spring
 
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