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

raptor 100 pressure readings

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Old 10-06-2014, 09:58 AM
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Default raptor 100 pressure readings

I Recently purchased a 2002 24 valve with a raptor 100 lift pump on it with upgraded lines it came with autometer fuel pressure gauge. My question is what is a normal reading for fuel pressure when normal driving. My pressure reads 14 at idle and about 11 when doing 55 down the road but when I get into it I read about 10 is this normal for a raptor 100 pump don't know much about them. Thanks in advice
 
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Old 10-06-2014, 10:03 AM
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That a little low for what I like to see, but you are above the danger zone. Anything under 10psi at WOT is danger. I like to see about 18/19 idle, 16 cruise, and no less than 10 at WOT.

You can try adjusting the regulator to try and get a bit for out of it.

http://www.pureflowairdog.com/manuals/R3SBD100.pdf

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Old 10-06-2014, 10:10 AM
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Do you think that adjusting that screw on the pump would bring it up anymore I'm thinking of just buying a raptor 150 or a fass titinum series pump to steer away from my VP being burned up.
 
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Old 10-06-2014, 10:12 AM
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You can try, just don't exceed 20 psi at idle. Increasing that regulator now could help prevent damage to your VP44 until you put a different fuel system on. The FASS systems are nice, and the added protection of the dual filters is great!
 
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Old 10-06-2014, 10:17 AM
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How many turns would that be you think to bump up the pressure the link you sent me said turn it clockwise but I don't want to exceed the 20 psi at idle.should I just turn it like a quarter turn each time and check it.
 
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Old 10-06-2014, 10:23 AM
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If you can, have someone watch the gauge while you adjust it with the truck running. If not, 1/4 turn at a time should be a safe procedure.
 
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Old 10-06-2014, 10:23 AM
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Best way to adjust it would be to let it idle and have your buddy bubba watch the gauge as you turn the screw
 
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Old 10-06-2014, 10:24 AM
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RAW, you beat me to it! Damn
 
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Old 10-06-2014, 10:31 AM
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'Ol Quick Draw here this morning!
 
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Old 10-06-2014, 10:45 AM
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Thanks guys for the help I will get at you guys and let you know how it worked.
 


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