5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

Injector issue

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  #11  
Old 12-15-2015, 10:36 PM
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next time dont take your injectors out to clean them. just put 1qt of dexron atf in the tank. do this for a few tanks an it will clean your whole fuel system.
 
  #12  
Old 12-19-2015, 04:58 PM
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Ok update. Changed CP3 pump and truck still won't crank. At a complete loss. Guess I'll have to send it to a mechanic Monday. 😕😕😕😕
 
  #13  
Old 12-19-2015, 05:45 PM
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Since you took it apart, at this point I'd guess you most likely have air on the high side somewhere, preventing the ECU from seeing enough FP to allow cranking. But up until then I believe you probably were on the right track.
 
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Old 12-19-2015, 06:09 PM
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Are you getting fuel or still no fuel?
 
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Old 12-19-2015, 06:43 PM
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I didn't crack any lines to see if there is fuel past the CP3 pump. Will do that in the morning.

Just need to clarify should fuel come out rail with just spinning truck over?
 
  #16  
Old 12-20-2015, 06:24 AM
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Yes it should spray everywhere very high pressure be careful. You may have an electrical problem like a relay or other component that is not allowing fuel through the ip. There is a FCA ( fuel control actuator valve ) that functions to supply fuel to the rail or bypass excess fuel back to the tank. Sounds like you have an electrical problem have you checked all your fuses and swapped around relays?
 
  #17  
Old 12-20-2015, 10:28 AM
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I feel like I have looked at all of the fuses. But will look again to make sure. Thank you
 
  #18  
Old 12-20-2015, 01:08 PM
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Ok no fuel coming out of the rail. Must be an electrical issue. Checked all the fuses in fuse box. Any help would be greatly appreciated!!
 
  #19  
Old 12-20-2015, 06:17 PM
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but you do have fuel up to your cp3?
 
  #20  
Old 12-20-2015, 07:10 PM
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Oh yes fuel to cp3 for sure.
 



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