1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Pump problems - HELP

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Old Oct 26, 2009 | 11:33 PM
  #1  
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From: Jay Florida
Default Pump problems - HELP

questions on my ve pump

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anyone have any answers on what is up with my pump. No power on bottom end seems slower than when the pump was stock.
 

Last edited by dieselnoise; Oct 26, 2009 at 11:33 PM. Reason: Automerged Doublepost
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Old Oct 27, 2009 | 01:16 AM
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need more info
 
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Old Oct 27, 2009 | 09:17 AM
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Make sure you fill out your signiture, so we know what mods youve done to your truck. What all have you done to the pump?
 
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Old Nov 2, 2009 | 07:06 PM
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I turned the fuel pin 90 degrees and turned the star wheel about 1 1/2 turns no more smoke or fuel seems like the thing is starving for air.
 
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Old Nov 2, 2009 | 07:14 PM
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So rotating your fuel pin and turning the star wheel is all you've done to modify your truck from stock form?
 
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Old Nov 2, 2009 | 07:15 PM
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make sure that the cone has the "deepest setting" facing forward, rotating it 90* doesnt mean it's instantly at the profile for the most fuel; and which way did you turn the starwheel? if you turned it right (running it down) it'll decrease the time it takes for the truck to come into fuel, if you turn it left (runningit out) it adds spring tension and causes fueling to be delayed until more boost is seen. if too much spring tension is present then it'll be a dog; if too much fuel is present it'll be a dog... gotta "tune it".
 
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Old Nov 2, 2009 | 07:26 PM
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Turned the fuel pin with the deepest side toward the front of the truck and turned the star wheel clockwise nothing. Also my ac compressor quit working was working fine and just quit will not take any fluid. Tried to jump the the clutch with a jumper wire still nothing.Thanks for any help with my troubles.O and I just bought the truck less than a week ago and am already having problems.
 
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Old Nov 2, 2009 | 07:39 PM
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hmmm; a/c shouldnt have anything to do with a fueling problem... not in my little world atleast idk what else it could be if that's all you messed with
 
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Old Nov 2, 2009 | 07:46 PM
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dieselnoise, you really have to let us know what you have done to the truck in order for us to help out. Go to your profile and find "edit your signiture" and fill that baby out. As far as your pump goes, are those the only things you've done? Since you say it ran better in stock form.
 
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Old Nov 4, 2009 | 05:24 PM
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Yeah I moved the fuel pin back to original position,that is the only thing that I have messed with.I seen no performance change from what I had done.Do I need to turn the star wheel more in the down position than before for more fuel or will to much mess something up?
 
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