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

pump still leaking

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Old 04-30-2010, 09:25 AM
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Default pump still leaking

i put a denny t pin in an the pump leaked so i had it rebuilt, it stopped leaking for awhile, it started to leak again. i took it back , they "fixed" it and now its leaking again. what the hell is the problem?
 
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Old 04-30-2010, 10:24 AM
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What area is it leaking from?
 
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Old 04-30-2010, 12:45 PM
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AFC housing where fuel pin goes and around the the linkage
 
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Old 04-30-2010, 10:06 PM
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Where?

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Old 05-02-2010, 09:33 AM
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where the top of the pump bolts on , somewhere in that area, an its filling up the area where the fuel pin goes.
 
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Old 05-02-2010, 12:35 PM
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Is it leaking so bad that its coming out the little rubber overflow? Any time you put in the aftermarket pins they say it makes it leak. It is caused by the deal around the small pin that rides on the fuel pin.
 
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Old 05-05-2010, 05:49 AM
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i think i also turned my starwheel too far, its all the way down . . .

---AutoMerged DoublePost---

yeah it squirts out the little rubber nipple thing
 

Last edited by Randall; 05-05-2010 at 05:49 AM. Reason: Automerged Doublepost
  #8  
Old 05-05-2010, 11:29 AM
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Yeah that would cause your fuel pin to go down fast and so that little pin would be on the deepest part of the pin more of the time and could be your problem.

So what you one of the guys that only tune your truck to roll-the-coal rather than performance.
 
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Old 05-05-2010, 07:22 PM
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sadly yes hahaha, but im only 22 and i got a heavy foot, but im learning quick, i backed off the starwheel, and i lightened my foot some,. . .ive only had the truck for a year so im still playing
 
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Old 05-05-2010, 11:59 PM
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Well all that black cloud is just unburnt fuel that your waisting. I hope you have a set of the proper gauges in that rig if your pushin a lot of coal.
 


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