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| 24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps |
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Idle psi? 55-60 psi? what are they? -... JOIN NOW TO REMOVE TRACER
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#1
11-23-2007, 04:27 PM
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Fuel Pump PSI
Idle psi?
55-60 psi? what are they? - 
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#2
11-23-2007, 04:34 PM
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If your in a VP-44 equipped truck and ildling at these pressures, run she's gonna blow. What is it your wantin to know. -
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#3
11-23-2007, 04:35 PM
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By fuel pump you mean Injection Pump and for a second generation truck it is:
15 to 18 PSI at idle. no less than 13 under load and no less than 11 at WOT. If you see anything less than that you need a new lift pump (transfer pump) or to at the very least change your filters. If you have many days of low pressure you will effect the health of your IP. There are many options on this fix and many other items related to it. -
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#4
11-25-2007, 11:40 AM
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Ok i have vp 44 but i get around 13 to 14 at idle new filter 2 weeks ago lift pump a year ago. I have an edge and if its turned up all the way and i get in it it will drop to 3-4. just wondering what the pressures were supposed to be -
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#5
11-25-2007, 11:59 AM
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Sounds like its time for a FASS -
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#6
11-25-2007, 01:17 PM
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3-4 psi at Wot aint good man.......you need to upgrade yer fuel delivery -
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#7
11-25-2007, 05:56 PM
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A better lift pump, larger fuel lines, a better pickup system in the tank and replacing or modifying the banjo bolts are all way to improve the fuel flow and psi numbers.
Be sure to fill out your signature so we can see what you have, this helps answer questions better. -
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#8
11-25-2007, 10:52 PM
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There are several aftermarket lift pump kits that can help you with the low fuel pressure problem.
FASS is one way, Walbro 392 kit (the way I went) is another, upgrading fuel lines is another, just going to 1/2" fuel line from Vulcan helped my stock pressures out a bit. Do some reading and find the kit that makes the most sense to you. -
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#9
11-25-2007, 11:03 PM
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I have just installed a belt drive lift pump that so far I am completely impressed with also. -
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| The Following User Says Thank You to Uncle Bubba For This Useful Post: | ||
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#10
11-25-2007, 11:11 PM
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Oh Cmon guys, What he really needs is a New Helix 2 Cam and a Manual pump setup!!!!
Just Kidding! These guys wont lead you wrong! -
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| The Following User Says Thank You to mysterync For This Useful Post: | ||
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#11
12-01-2007, 09:24 AM
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 I've stayed at this rule and never had a VP44 problem or failure...  -
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| The Following User Says Thank You to Mopar1973Man For This Useful Post: | ||
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#12
12-07-2007, 05:38 PM
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This is what I am running. 45 psi at idle, 43 at cruise, 37 at WOT.  I have a Draw Straw, -8 lines on the suction side and -6 on the pressure side running through the factory filter housing. Yes, I still have heated fuel if needed. Dave -
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#13
12-07-2007, 05:44 PM
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WOW Dave..thats way too much pressure
I am suprised it runs at all yer VP internal spillack is in full tilt what the heck ya runnin fer a pump??? -
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#14
12-07-2007, 05:47 PM
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12 Valve lift pump. I am working on a custom bypass, post filter. That should limit presure to 25 or so psi. I have over 60K on the current setup. And don't forget, too much is almost enough!! Dave -
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#15
12-07-2007, 05:51 PM
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