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

Lift Pump

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  #1  
Old 07-19-2009, 05:09 PM
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Default Lift Pump

My lift pump is going out. What is the best one and how much trouble is it to put it on.
 
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Old 07-19-2009, 05:25 PM
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12V's lift pumps are nice , are you sure your bowl isnt plugged up ?
 
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Old 07-19-2009, 08:39 PM
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What brought you to the conclusion that the lift pump is going out. Its mechanical so they rarley ever go bad
 
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Old 07-19-2009, 09:10 PM
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You should check your fuel pressure and maybe get a new overflow valve before even considering a new lift pump.

What kind of problems are you having?
 
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Old 07-20-2009, 05:46 PM
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dont waste your money on a new over flow valve, just take yours appart, stretch the spring about an 1/8 to 3/13'' and see if that fixes your problem
 
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Old 07-20-2009, 06:28 PM
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Be careful with that after I stretched mine - the pump started ticking.
 
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Old 07-20-2009, 10:41 PM
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well when I get on it and it gets to 2000 it starts to cut in and out. Its like the fuel is there cause speed climbs real slow but it cuts in and out, say im driving for like 20 min. on cruise at 75mph, when I let off the truck dies but only sometimes. Plz dont tell me its my injector pump!!!!!
 
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Old 07-21-2009, 12:17 AM
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doubt its the p pump them things are tanks
 
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Old 07-21-2009, 12:30 AM
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Originally Posted by smokedout
well when I get on it and it gets to 2000 it starts to cut in and out. Its like the fuel is there cause speed climbs real slow but it cuts in and out, say im driving for like 20 min. on cruise at 75mph, when I let off the truck dies but only sometimes. Plz dont tell me its my injector pump!!!!!
You should check your fuel pressure.
 
  #10  
Old 07-21-2009, 04:57 PM
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Now the damn thing runs like I dont have any performance parts on it and yesterday it sounded like it had some bad *** cam it. How do I do anything about my fuel pressure? plz help before the damn thing breaks down!!!!!!!!!!
 


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