5.9L 24V Performance Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps Related To Performance And Longevity

raptor problem

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  #1  
Old 08-11-2010, 10:49 PM
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Default raptor problem

So I finished everything and now I'm having issues. I cant seem to bleed the system. I've been opening up the filter to run fuel through the system and nothing but little drips, I turned up the pressure and still just little drips when it first cranks and then nothing. What is going on? I now have to crack my injector lines to because it started and ran dry out of fuel. I don't know what is going on. This has been such a pain to do and now I can't get the system bled

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And yes the raptor is running I can hear it running and yes I checked the line at the fuel tank and its seated firmly on the supply
 

Last edited by wyodiesel92; 08-11-2010 at 10:49 PM. Reason: Automerged Doublepost
  #2  
Old 08-11-2010, 10:57 PM
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Your sure the pump is primed and has good flow to it. Also you didnt have the in tank pump did you?
 
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Old 08-11-2010, 11:03 PM
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I did the way the instructions said. I have all the lines connected, no leaks, and no fuel coming out except for drips using the filter draining method. When it started by accident I had no fuel pressure.

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And no I don't have an in tank pump. The lift pump on the frame was still there with the ecm lead to it which is signalling the raptor
 

Last edited by wyodiesel92; 08-11-2010 at 11:03 PM. Reason: Automerged Doublepost
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Old 08-11-2010, 11:06 PM
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The pump still uses the factory pickup? how much fuel is in the tank?
 
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Old 08-11-2010, 11:10 PM
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Yes the raptor uses the stock pickup and full tank of fuel
 
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Old 08-11-2010, 11:17 PM
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Got access to an air compresser? If so, with the pump running, take a rag and a blow gun and using the rag to form a seal around the filler neck and blow a couple short burst of air into the tank. It will force fuel to the raptor and prime the pump. Be carefullf with the air, you dnt wanna blow up your tak also is the fuel filter canister full of full as well to keep from getting air in the lines back to the pump?
 
  #7  
Old 08-11-2010, 11:21 PM
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Idk honestly about the filter, its dry now after the truck accidently started. And no air compressor. I have no clue what to do, I mean we tried bleeding it probably for 30 mins or more
 
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Old 08-11-2010, 11:29 PM
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You have good supply to the pump from the tank, as in pulled the hose off an fuel came out? I had a simalar prob gettin my pump primed on my first Airdog. Youll get it, no worries
 
  #9  
Old 08-11-2010, 11:40 PM
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I'm just getting drips out of the drain valve on the filter on initial crank and then nothing. I can't seem to get fuel pressure at all, I even turned the pump up
 
  #10  
Old 08-11-2010, 11:47 PM
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ok, you need good fuel to the raptor, then the filter housing will fill and when thats full crack #1 and 3 injectors loose and start cranking till it fires then tighten them back up
 



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