2007 5.9l no start after injector change - Dodge Diesel - Diesel Truck Resource Forums

3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!
Sponsored By:
Sponsored By:

2007 5.9l no start after injector change

Reply

 
 
 
Old 09-14-2017, 07:09 PM
  #1  
Registered User
Thread Starter
 
Join Date: Sep 2017
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
2007 5.9l no start after injector change

I have an 2007 5.9l 24valve Cummins . It was running but skipping and shutting off while driving down the road I took the injectors out and had them tested an injection pump and injector shop. They all tested bad or very weak. So I installed a reman set of injectors and now the truck won't start at all . I was told it was either the CP3 pump on the engine not suppling fuel or the in tank pump . I also replaced the pressure switch on the CP3 pump . Does anyone have any idea what I'm over looking ? Fuel rail system seems not to be building enough pressure. I do know it takes 4000 psi to crank but it's barely getting anything , . I just don't want to throw parts at it . Had code of erratic fuel pressure also .

Last edited by Nicholas Fig; 09-14-2017 at 07:18 PM. Reason: More info
Nicholas Fig is offline  
Reply With Quote
Old 09-15-2017, 02:42 AM
  #2  
Administrator/Jarhead
 
madhat's Avatar
 
Join Date: Jun 2006
Location: Jacksonville, NC
Posts: 14,958
Thanked 17 Times in 17 Posts
Did you follow service manual specs when you were installing them? If you have a loose connection from the rail to the injector, you won't build enough pressure to crank, you'll have a leak somewhere.


Who tested them? I don't know of many shops that can test Bosh injectors. Where did you get the reman injectors from?


Start with the cheapest thing first. Check the torque values on the lines.


Do you have a low pressure fuel pressure gauge? Rail pressure gauge?


If you're just throwing parts at it without the proper troubleshooting processes, you're going to be spending a lot of money.
madhat is offline  
Reply With Quote
Old 09-15-2017, 05:24 AM
  #3  
Registered User
Thread Starter
 
Join Date: Sep 2017
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Yes every single thing was put to specs . It was put together by dodge specs. They are reman injectors for a shop in Savannah GA called test masters my grandfather has been dealing with them for over 50 years because we have a diesel shop and work on these same engine in logging equipment but this truck is kicking my butt . Lol . All injector tubes was changed and new orings , and everything was installed .
Nicholas Fig is offline  
Reply With Quote
Old 09-18-2017, 10:06 AM
  #4  
DTR 1st Sergeant
 
soulezoo's Avatar
 
Join Date: Apr 2007
Location: Applegate, CA
Posts: 5,529
Thanks: 0
Thanked 3 Times in 3 Posts
Cap the pressure relief valve outlet on the rail and try again. A weak, leaky PRV can cause these issues.
soulezoo is offline  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Rik
3rd Gen Engine and Drivetrain -> 2003-2007
4
08-05-2014 02:19 PM
Nicheshok
3rd Gen Engine and Drivetrain -> 2003-2007
8
11-17-2012 01:00 PM
carleshicks
HELP!
2
09-26-2007 02:28 PM
TNutcher
Performance and Accessories 2nd gen only
25
06-06-2007 09:40 PM
1320
HELP!
1
09-03-2003 07:00 AM


Thread Tools
Search this Thread
Quick Reply: 2007 5.9l no start after injector change


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.