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

Oil leaking around injectors

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Old Mar 14, 2009 | 10:49 PM
  #11  
ykdave's Avatar
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could just be the little sealing washer that seals the injector to the head... Check the injector nut torque (44ft/lb) and maybe just pop it out and inspect it.

I can see the partially burnt fuel mixture slowly oozing out of there... Its just a minor leak so it probably only gets a little 'blowby' every combustion cycle as the mixture lights when the pressure is the highest.

The same kind of thing happens on a gasser with a loose plug, it looks like its pissing out oil from the plug threads, but its just a buildup of oil/fuel oozing out.
 

Last edited by ykdave; Mar 14, 2009 at 10:51 PM.
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Old Mar 15, 2009 | 09:37 PM
  #12  
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get a set of seals from dodge about $50 it wont take more that an hour to raplace them
 
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Old Mar 15, 2009 | 10:02 PM
  #13  
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should i just buy some 90hp injectors from ddp? if i have to take um out anyway
 
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Old Mar 15, 2009 | 10:08 PM
  #14  
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if you have the money i would, just make sure your tranny will handle it, i know a stock turbo would, them are basically the same as i got and they ate my clucth after 10 miles
 
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Old Mar 16, 2009 | 09:16 PM
  #15  
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Well, i did have the money, buy jacked my truck up today, noticed my ball joints are toast....so i am going to replace all of them. and as for the transmission, i am going to try upgradeing it myself with a budie...put extra clutch pack and steel planitary gears. all it takes is time and money. but its been one thing after another
 
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Old Mar 16, 2009 | 11:57 PM
  #16  
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you have no idea put yourself in my shoes, they you be saying one thing after another
 
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Old Mar 17, 2009 | 02:29 PM
  #17  
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I know what how that book reads
 
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Old Mar 17, 2009 | 09:31 PM
  #18  
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Have you got to the end? let me know how it goes
 
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Old Mar 18, 2009 | 12:20 AM
  #19  
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there is no end in sight with a cummins used for play, test drove it last night and ate the belt and fan hub completely toataled the fan asembly
 
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Old Mar 18, 2009 | 08:08 PM
  #20  
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that sucks, i just got my little tool to pull the hub, so i could replace my ball joints, and when i used it it pulled the hub assy. apart and did not seprate the assy. from the steering knuckle. soooo i had to buy a wheel bearing hub assy. and wile i was in there i figured i would do the u-joints, now i am 500 bucks into it, and hope it will last atleast 50,000 miles. we will see........That money could have gone to my new injectors or something fun too remeber the days of the old 1ton front ends with the adjustable tapperd bearings. i miss thoes!
 
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