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

Boost pressure

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Old Jan 11, 2015 | 03:30 PM
  #1  
dango's Avatar
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From: Rock Hill, SC
Default Boost pressure

So I just got my fass 220 installed. My boost was running about 50 give or take, now it pegs at about 38. is there any reason for such a drop? my mods are in my sig.
 
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Old Jan 11, 2015 | 11:48 PM
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thats weird, the only thing i can think of is because you're now filtering through a different fuel system, and you now have an elect. fuel pump on, instead of the mechanical lift pump your motor had origanaly.
 
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Old Jan 12, 2015 | 12:16 AM
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whats your fuel pressure at? maybe your ofv is failing. its best to get the solid ones with a electric pump
 
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Old Jan 12, 2015 | 06:57 AM
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fuel pressure is at 57psi consistent
 
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Old Jan 12, 2015 | 12:09 PM
  #5  
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I'm an idiot. I forgot to put a bolt back in the intake manifold where the injector return line clamps. I heard a loud hissing and figured it out it was a boost leak. thanks for the help fellas
 
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Old Jan 19, 2015 | 12:13 AM
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awsome
 
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Old Jan 22, 2015 | 04:23 PM
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So .. running better now .. LMBO !!!
 
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