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

pump diagram

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  #11  
Old 10-10-2010, 12:25 PM
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You can also get some injector cleaner.and try it!
 
  #12  
Old 10-10-2010, 05:15 PM
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i've pulled the injectors, cleaned them, and reinstalled. so i pulled the fuel line off the back injector (the problem one) and it just seemed like it wasnt spittin as much fuel as the others, but the miss is only at low rpms, like up to 1400 and then it smooths out, or at least sounds like it
 
  #13  
Old 10-10-2010, 05:39 PM
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you didnt drop the spring out of the DV holder and loose one of the shims thats on top of it did you?
 
  #14  
Old 10-10-2010, 05:55 PM
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nope. im sure of it. i have a hunch it might have been a piece of rubber from the o-ring
 
  #15  
Old 10-10-2010, 10:51 PM
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Try to get a fuel pressure gauge on it and see what she reads! Also what degree's did you set the pump? Could be the lift pump bad (but i hope thats not the case)
 
  #16  
Old 10-11-2010, 10:48 AM
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i havent adjusted anything on the pump. and its got a new lift pump, maybe 10k miles on it
 
  #17  
Old 10-11-2010, 08:14 PM
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maybe take that dv holder back out and take it apart and see if a piece of rubber is stuck in it?
 
  #18  
Old 10-11-2010, 11:41 PM
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did u use the same copper washers
 
  #19  
Old 10-12-2010, 05:58 AM
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you sure you put the dv back in the right way? not upsidedown
 
  #20  
Old 10-13-2010, 09:55 AM
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well after it started having this miss, i pulled it back out and took it apart and cleaned it and it ran the same way. and i put ir back together the same way it came apart and used the original parts. i just cant figure it out.
 
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