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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Hard starts

Old Jul 12, 2012 | 05:30 AM
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Default Hard starts

01 24valve 175k miles, hard starts when hot starts right up cold. Yesterday I started it hot put it in drive and it stalled started again once I started it and give it a little fuel like I was working air out or something I'm not sure.throwing p1693 code that's all
 
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Old Jul 12, 2012 | 05:35 AM
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Stalling problem sounds like a fuel issue.

Sent from my dumb phone!
 
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Old Jul 12, 2012 | 06:53 AM
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Originally Posted by 1999stroker
Stalling problem sounds like a fuel issue.

Sent from my dumb phone!
So what are you thinking? Air leak? Vp44 going bad, lift pump goin bad?
 
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Old Jul 12, 2012 | 07:02 AM
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Hard hot starts is a symptom of a bad VP, but let's try less expensive things first.

What mods do you have done to your truck, specifically the fuel system?
 
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Old Jul 12, 2012 | 07:20 AM
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Originally Posted by RAWilliams
Hard hot starts is a symptom of a bad VP, but let's try less expensive things first.

What mods do you have done to your truck, specifically the fuel system?
The truck is completely bone stock. I just replaced the fuel filter to see if it was clogged, still the same problems.
 
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Old Jul 12, 2012 | 07:22 AM
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It would be a very good idea to get a fuel pressure gauge on the supply to the VP44. Vp44's are prone to failure with improper fuel supply.
 
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Old Jul 12, 2012 | 07:49 AM
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Yea, I would check your fuel psi, and you might start thinking about which LP you want... Fass is a good way to go!
 
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Old Jul 12, 2012 | 07:57 AM
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Originally Posted by Dodgemanstan
Yea, I would check your fuel psi, and you might start thinking about which LP you want... Fass is a good way to go!
I plan on getting fass soon just bought a quadzilla adrenaline v pulse 2. What would cause low psi and could that be my problem
 
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Old Jul 12, 2012 | 08:41 AM
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The factory pumps just aren't good enough, it's that simple. They do not provide the flow to properly feed, cool, and lubricate the VP44. Adding a fueling box, like the Quad, will only make it worse.
 
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Old Jul 12, 2012 | 08:49 AM
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Originally Posted by RAWilliams
The factory pumps just aren't good enough, it's that simple. They do not provide the flow to properly feed, cool, and lubricate the VP44. Adding a fueling box, like the Quad, will only make it worse.
Okay so what are you thinking s my problem vp going bad or is my problem I don't have enough fuel. I will not run my quad till I get a fass but will the fass fix my problem or am I in need of a vp very soon. If so I would like to buy the vp before I go spend 600 on a fass if that makes sense.
 
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