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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Old Jul 19, 2009 | 05:09 PM
  #1  
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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 Jul 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 Jul 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 Jul 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 Jul 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 Jul 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 Jul 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 Jul 21, 2009 | 12:17 AM
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doubt its the p pump them things are tanks
 
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Old Jul 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.
 
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Old Jul 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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