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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

Occasionally, at stoplights I feel a really random skip here and there, but with no ignition system I am not sure where to start looking. Any tips?... JOIN NOW TO REMOVE TRACER

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  #1  
Old 11-29-2009, 11:53 PM
CROWN14's Avatar
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Default Misfire?

Occasionally, at stoplights I feel a really random skip here and there, but with no ignition system I am not sure where to start looking. Any tips?
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  #2  
Old 11-30-2009, 12:27 AM
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its more than likely a leaky injector (or a few). i have seen a few sets, including mine do that.

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  #3  
Old 11-30-2009, 12:39 AM
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These can be rebuilt cant they?
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  #4  
Old 11-30-2009, 01:02 AM
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they can... not looking to go bigger??
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  #5  
Old 11-30-2009, 01:55 AM
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hey myn does the same thing sept it only does it when the motor is warmed up and in park idleing and when its in drive it dont but it runs lower rpms when in park maybe thats why it dont do it in drive sitting still but it runs perfect while driving can this hurt anything driving it like this until i can get money for injectors

NCFPD's Sig:98.5 Dodge 2500 quad QC 24v cummins,5 inch stacks, K&N BHAF, silencer ring MIA, Hypertec max energy,Raptor 150, SFI approved flex plate,Billite torq conv. cover,Shift kit. 285/75/16 MT's Plenty to come
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  #6  
Old 11-30-2009, 10:12 AM
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Originally Posted by BlackedOut02 View Post
they can... not looking to go bigger??
Maybe...
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  #7  
Old 11-30-2009, 01:15 PM
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DO IT!!!

how much hp do you want? what do you do with the truck? ext...
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  #8  
Old 11-30-2009, 02:09 PM
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Usually low rpm misfires after some miles on vehicle are the injector tips. But another easier to fix proplem is water in the diesel fuel. Water in vapor form = good. Water in liquid form= bad. I ended up putting a fass pump on. "Free" HP (No engine mechanical change) it takes all the water and air out of the fuel. I am amazed at how much water removal- I drain every fuel fill and it is over one quart per tank on interstate in summer. Just think before that it went through the engine. My truck starts way quicker, better mileage, maybe more power, but best of all - easy filter changes. A win win situation. Besides worn tips I think you have water residue. And I almost forgot - in the fuel filter stock on my truck - I never found ANY water. Good luck my friend.

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  #9  
Old 11-30-2009, 02:32 PM
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thats cool alota good info i think it might help me and crown sorry not trying to take over your spot here crown just havin same problems
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  #10  
Old 11-30-2009, 02:37 PM
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Originally Posted by CROWN14 View Post
Occasionally, at stoplights I feel a really random skip here and there, but with no ignition system I am not sure where to start looking. Any tips?

Could also be the VP44 or the APPS. Need to find out if there are any codes.

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  #11  
Old 11-30-2009, 03:22 PM
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me i have no codes and the vp44 was replaced about 2 weeks ago and my apps has been properly adjusted if it is the tips would wouold an additive used to clean them help fix it
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  #12  
Old 11-30-2009, 10:13 PM
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rather than rebulding the stock injectors just get a set of 275RV they come stock in the cummins they run in the motorhomes, and they are great with a stock turbo and only around the 300 dollar mark, for bran new

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  #13  
Old 11-30-2009, 10:30 PM
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Originally Posted by wildbill View Post
Could also be the VP44 or the APPS. Need to find out if there are any codes.
No codes, but its pretty damn likely I have water in the fuel. The filler neck was disconnected when I bought the truck and even though I have run a quart of power service through it since buying the truck I probably havent burned through 35 gallons yet. From all indications this thing is getting 20mpg easily- around town too.

MXTUNER1 exactly which FASS setup did you go with?
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  #14  
Old 12-01-2009, 01:29 AM
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Fass 150

---AutoMerged DoublePost---

Didnt have room to put on sig

Last edited by mxtuner1; 12-01-2009 at 01:29 AM.. Reason: Automerged Doublepost
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  #15  
Old 12-03-2009, 10:25 AM
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yeah my truck when i have run it a while it does idle smooth what could that be.
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