5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

fuel pressure guage

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Old Apr 25, 2010 | 04:57 PM
  #1  
dan33klein's Avatar
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From: cherry,il
Default fuel pressure guage

what should i see for fuel pressure as a max?

im getting a guage and can pick from a
0-30
or 0-100

may *** well go with the 100 so i have plenty of guage left right?
or will i be good with a 0-30
 
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Old Apr 25, 2010 | 05:25 PM
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I don't think 30 will be enough. From what I've heard, it's common to hit mid 30 psi at WOT. I'm about to put mine in (0-100) so I can't say for sure.
 
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Old Apr 25, 2010 | 06:41 PM
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From: cherry,il
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ok ill do 0-100
 
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Old Apr 25, 2010 | 06:53 PM
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Yup kinda over kill but the ppump can see up to that and more plus if you get an AirDog or fass they come preset to 40psi
 
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Old Apr 25, 2010 | 09:26 PM
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From: cherry,il
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yeah that might be in the future. ill go with 0-100
 
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Old Apr 25, 2010 | 10:20 PM
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buy me 1 while ur at it , im glad u asked this bc ive been wondering
 
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Old Apr 26, 2010 | 07:24 AM
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haha you wish
 
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Old Apr 26, 2010 | 10:11 AM
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Make sure you also run a snubber between the port and the gauge or you will shake the gauge apart in short order. Most guys are using a 1/4" brass valve (1/8" NP thread) just barely cracked open. That smooths out the pulses from the pump so you can read the true pressure.
 
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Old Apr 26, 2010 | 01:22 PM
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94 12valve's Avatar
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There is a 0-60 fuel press guage from isspro, That is what I use and only see a solid 30 psi out of my air dogg 150.
 
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Old Apr 28, 2010 | 09:36 PM
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yeah i only have a choice of 0-30 or 0-100
 
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