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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Miss at idle and surging in high rpm's?

Old Jun 4, 2014 | 12:48 AM
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Default Miss at idle and surging in high rpm's?

So I am starting to realize a few problems with my truck, when the truck is warm it has a slight miss at idle just enough to make the needle move up and down a bit and you can hear the motor with it. I did my head gasket and new 125hp injectors about 2 months ago.

Also I notice if I am in 4th or 5th gear and get into the throttle quickly that it surges quite a bit, but easing into it seems fine. I unplugged my edge comp and the problem seemed to get better but it was hard to tell at some points.

I know when I put my new fass 150 on about a month ago that when I was cracking the injector lines I was only getting fuel out of a few of them, like 1 and 4 but nothing out of 3. I am wondering if my vp44 is possibly having internal failure and the plunger is stuck inside or something... If anyone has input I would appreciate it! My mods are in my sig
 
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Old Jul 11, 2014 | 07:10 PM
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Please throw up what you find as I am having a similar issue bud, Thank you... The miss I have at idle is faint and if I am running hiway speeds in cruise I can really notice it... sound familiar??
 
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Old Jul 12, 2014 | 01:06 PM
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I put a new injection pump on it last weekend and it seemed to help quite a bit, I still notice a slight miss at idle but the surging is gone. I'm gonna have my injectors tested once I can have some down time on my truck
 
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Old Jul 12, 2014 | 07:17 PM
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I started looking which injector did you go with?? They give them away.. I may look for someone to rebuild mine... I have to pressure test my rig first thing.. Thanks bud
 
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Old Jul 12, 2014 | 07:22 PM
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Go with dynomite diesel injectors. Dont try to rebuild them, our injectors are pretty cheap actually. I have their 125hp injectors, I worked there for about 2 years and highly recommend them to anyone
 
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