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

12 valve trouble

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Old Sep 18, 2011 | 05:57 PM
  #1  
blue streak dually's Avatar
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Default 12 valve trouble

i have a 1993 12 valve i just changed the turbo and injectors and its like it has no power and spitting and sputtering like it has no power pleasse can somebody help me figure this out
 
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Old Sep 18, 2011 | 07:36 PM
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my vote would be to crack your injectors as it sounds like air in the system.
 
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Old Sep 18, 2011 | 07:36 PM
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whats yer fuel pressure
 
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Old Sep 18, 2011 | 10:16 PM
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i have already cracked all the fuel lines to bleed the lines its like missing like a bad injector idk what the problem is

---AutoMerged DoublePost---

has a ruff idle and no power on take off but once the rpms builds up it has alittle kick a goes alittle fast but not much and that with the pedle to the floor
 

Last edited by blue streak dually; Sep 18, 2011 at 10:16 PM. Reason: Automerged Doublepost
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Old Sep 18, 2011 | 10:31 PM
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lodal cummins's Avatar
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could there be dirt in between the copper washer? i took a shop vac and sucked everything out of the holes before re-install. what kinda boost are ya getting?
 
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Old Sep 18, 2011 | 11:03 PM
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barly ten pounds of boost
 
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Old Sep 19, 2011 | 01:59 PM
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When I changed to the GDS 60mm/16cm in my '93 it would hardly make 12psi at WOT. Upon inspection the end of the IC was split open around the inlet where the tube from the turbo hooks in. Check the IC and boots and IIRC there was a o-ring where the tube connected to the turbo that can cause leaks.
 
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