Diesel Bombers SIGN UP NOW

National Association of Diesel Motorsports
Go Back   Diesel Bombers > Dodge Cummins > 24 Valve 2nd Gen Dodge Cummins 98.5-02
Sign in using an external account
Register Forgot Password?
Search


Registered Members don't see these ads. Register now it's free!

24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps

Welcome to Diesel Bombers Forums!
Welcome to DieselBombers .com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Diesel Bombers Forums community today!


OK. I hope some of you are patient enough to read all of this. I changed my fuel filter a few weeks ago and the cap (factory fuel filter housing) was on super tight. I had to use a breaker bar to break it loose. ... JOIN NOW TO REMOVE TRACER

Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-17-2013, 06:14 PM
pastthebrink's Avatar
Diesel Fan

pastthebrink
   

Default Air in lines or bad lift pump?

OK. I hope some of you are patient enough to read all of this. I changed my fuel filter a few weeks ago and the cap (factory fuel filter housing) was on super tight. I had to use a breaker bar to break it loose. The cap looked slightly cross threaded but I got it back on with new filter installed. I drove it a few miles and it died, after I noticed fuel all over the road. Towed it home, re-installed the cap. Had to crack the lines to get it started again but cranked right up after cracking one line. Went a few miles and after it heated up it died again. Cracked the fuel lines again, and again it cranked right up. Repeat process two more times, same result. I don't see any leaks now but Im still getting air in the lines somewhere. I have no check engine light or codes coming up.
So the question is could my lift pump be going bad, could the cap or filter housing be letting air leak in without fuel leaking out. I am on another forum and they kind of have me chasing my tail.

pastthebrink's Sig:2002 Dodge Ram 2500 Cummins 5.9, Raptor pump, MBRP 5in turbo back exhaust, quadzilla adrenaline, injectors, 6 inch lift with 35s
Reply With Quote
  #2  
Old 07-17-2013, 10:18 PM
Bryce's Avatar
Diesel Enthusiast
Status: Asses and Elbows

   
View Member's Albums

Default

It could be a combination of both of them. What is your fuel pressure? I would suggest getting a new filter cap first. Napa carries them and it should be about $15. Here is some more reading for you VP44 Diagnostic

Bryce's Sig:2001 Cummins 4wd auto, Edge Juice w/Attitude, Raptor 100 lift pump, S&B air intake, Banks 4" turbo back exhaust, BD sway bar links, Mopar 09 steering linkage, Borgeson steering box, pump & shaft

Last edited by Bryce; 07-17-2013 at 10:28 PM..
Reply With Quote
  #3  
Old 07-18-2013, 06:25 AM
pastthebrink's Avatar
Diesel Fan

pastthebrink
   

Default

Originally Posted by Bryce View Post
It could be a combination of both of them. What is your fuel pressure? I would suggest getting a new filter cap first. Napa carries them and it should be about $15. Here is some more reading for you VP44 Diagnostic

Yeah I actually read that a few days ago and thats when I started thinking lift pump, but I dont want to spend 600 bucks on a new one if its only air getting in the system. I will buy a new cap tom and see what happens with that, Im tired of towing my truck home though.
Reply With Quote
  #4  
Old 07-21-2013, 11:38 PM
hydroshok's Avatar
Diesel Enthusiast
Status: My money maker shakes itself...

   
View Member's Albums View Member's FaceBook Profile View Member's Twitter Account

Default

I vote cap because if the lift pump went; you would not be getting air in the lines. A guage would tell you for sure though. It'd been a few years, but don't they have O-rings on them? If so what does it look like?

hydroshok's Sig:
89 cummins/83 crew cab 5spd 2wd: P-pump 24v, 10 spd roadranger, 05 E-450 rear, push button start, pull cable and gauges
01 2500 4x4 5spd: 12 valve swap, 4kgsk, 19*, AFE intake, AirDog, HX40, air ride, exhaust brake and gauges
**If you run bio-diesel; do you roll coleslaw?**
Reply With Quote
  #5  
Old 07-23-2013, 06:13 AM
pastthebrink's Avatar
Diesel Fan

pastthebrink
   

Default

I put on the brand new O ring with the filter when I changed it. I will put a new one on when I get the new cap in.
Reply With Quote
  #6  
Old 07-28-2013, 07:34 PM
pastthebrink's Avatar
Diesel Fan

pastthebrink
   

Default

Ok. I finally got my filter cap and my gauges in the mail today. I will install them in the A.M. I need to know what I am looking for on the gauge. Do I need to drive the truck under load or can I just check it in neutral? I dont really want to have to tow the truck home again so I am a little sketchy about driving it around in case it dies again.

---AutoMerged DoublePost---

O.K. I got my parts put on today and when I pulled the fuel filter I noticed that there was almost an inch of a jelly like substance on the bottom of my fuel filter. There was also a ton of sand and junk in the bottom, not to mention the banjo bolt was totally corroded. I got it all cleaned out and put the new banjo bolt on that came with my fuel pressure gauge. Got it started back up and Im holding 15psi at idle. I havent gotten a chance to drive it under load yet (need to have someone follow me in case it dies again and I need to tow it).
Anyway, I guess the jelly stuff was algae??? Still no check engine light, so I guess its just trial and error from here on, unless anyone else has any ideas.

Last edited by pastthebrink; 07-28-2013 at 07:34 PM.. Reason: Automerged Doublepost
Reply With Quote
  #7  
Old 07-29-2013, 12:35 PM
hydroshok's Avatar
Diesel Enthusiast
Status: My money maker shakes itself...

   
View Member's Albums View Member's FaceBook Profile View Member's Twitter Account

Default

15 @ idle is good. No clue about the jelly. Bottom of the tank maybe? You didn't take a pic did you? Did you clean it out before when you replaced it? I just realized your 30min from me so pm me your number if you want to come up for help sometime.
Reply With Quote
  #8  
Old 07-29-2013, 05:57 PM
pastthebrink's Avatar
Diesel Fan

pastthebrink
   

Default

I did take some pictures after I started cleaning it but you can still see a good deal of junk down inside of it. Also took a picture of the corroded banjo bolt.

Last edited by pastthebrink; 07-29-2013 at 05:59 PM..
Reply With Quote
  #9  
Old 08-04-2013, 11:39 PM
pastthebrink's Avatar
Diesel Fan

pastthebrink
   

Default

OK well I dont know why the pics wont show.
Anyway I took the truck out today and ran it for a while, got it up to highway speed. I went from running 15psi (at idle) right after I cleaned out the filter to 13psi now. I guess the filter is getting more crap from the tank in it again.
I was dropping down to 6-8psi at wot but the truck was pulling hard, after it warmed up. Is that good enough or should I be looking for a new lift pump?
After I shut it off I let it sit for a few hours and started it back up to go to the store, felt like it was pushing some more air through it because there were some fairly bad stutters but they went away pretty quickly.
Reply With Quote
  #10  
Old 08-05-2013, 02:11 PM
jigabop's Avatar
Diesel Wrench

   
View Member's Youtube Account

Default

you are going to kill that injection pump...

sounds like you have a bunch of crap in your tank...run that thing till its just about bone dry and drop your tank and clean it out...then hang it back up and fill it up with diesel.

change your fuel filter again and put a better lift pump on there, or stretch the spring a bit.

you want no less than 10PSI at ALL TIMES!!! (this includes WOT)

more ideally would be 14+ PSI at all times to keep fuel constantly returning to the tank which will help cool the VP44 down. (overflow valve in vp44 opens at 13psi.)

jigabop's Sig:'00 2500 Sport 4x4 Cummins, powered by the ultra high performance 53 block and the never failing SOVP44! 576hp/1285tq 8/10/2013
Reply With Quote
 
 
 
submit to reddit
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


 
All times are GMT -5. The time now is 02:57 AM.

Copyright And Legal Notice Links Of Interest

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Diesel Bombers ® - All Content Protected Under Intellectual Property Rights Law of Registered Trademarks
Reg. No. 3,494,401 Cls. 100, 101 & 104 Under Int. Cl. 38
USE AT YOUR OWN RISK WE HOLD NO LIABILITY FOR ANY CONTENT RIGHT, WRONG OR INDIFFERENT

Protected by Copyscape Duplicate Content Check