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

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Old Feb 10, 2010 | 06:06 PM
  #11  
Richie O's Avatar
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With you m3 pin I would turn the smoke screw up till its flush with the inside top. I would then back the starwheel up a few turns. That will allow very little fuel untill the boost comes up.
 
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Old Feb 11, 2010 | 12:27 PM
  #12  
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lots of nitrous
 
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Old Feb 11, 2010 | 05:04 PM
  #13  
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twins haha.
 
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Old Feb 11, 2010 | 07:33 PM
  #14  
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i dont have room for twins. its not even an option. period. no if ands or buts it wouldnt fit
 
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Old Feb 12, 2010 | 08:32 PM
  #15  
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Like posted, back the afc preload screw off, then bring the star wheel up to apply more force to the AFC. This will make the pump respond slower until boost comes in to clean it up. Soften the pump response and let it spool mostly on the injectors.
 
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Old Feb 13, 2010 | 12:21 AM
  #16  
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im in the middle of my electric fan install. ill finish that tomorrow and ill mess with my smoke screw and afc on monday and report back!
 
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Old Feb 13, 2010 | 12:43 AM
  #17  
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Did the pump shop grind the AFC lever? What color AFC spring you got? You should be able to tune out some smoke. My pump is from the same place and it is still in the box so I'm curious.
 
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Old Feb 13, 2010 | 12:52 AM
  #18  
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i have no idea exactly what they did they would not tell me. ill look at the spring when i get into it on monday
 
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Old Feb 13, 2010 | 07:04 AM
  #19  
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I would demand they tell you. Its your pump, kinda hard to diagnose an issue if you dont know whats done.
 
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Old Feb 13, 2010 | 10:44 AM
  #20  
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Thats how those diesel shops are. They don't want you to know a damn thing about the pump, that way if anything happens they just replace the whole damn thing and rape you with the cost of it

I went to get my gasket kit from a local shop and he wouldn't stop about how he thought I should replace the pump, he he never messes with pumps, and went on about runnaways and was trying to deture me from doing any work on it.
 
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