Diesel Bombers SIGN UP NOW

National Association of Diesel Motorsports
Go Back   Diesel Bombers > Chevy/GMC Duramax > Chevy/GMC Duramax 01-04 LB7
Sign in using an external account
Register Forgot Password?
Search


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

Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

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, New to the site, but I'm out of ideas. I have an 03 Durmax that was a hard start now is a no start. Here is the very lengthy history on this. about 7 months ago, I started getting a extended crank start. Replaced ... JOIN NOW TO REMOVE TRACER

Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-11-2011, 05:03 PM
Newbie

   

Default No Start on my 03 Duramax

Ok, New to the site, but I'm out of ideas. I have an 03 Durmax that was a hard start now is a no start. Here is the very lengthy history on this. about 7 months ago, I started getting a extended crank start. Replaced the fuel filter, problem was better for about a week or so. Problem got worse when the weather was hotter and the motor got hotter. It would get to the point where I had to use starting fuel to get it to start... I know all the bad stuff that can happen, don't need a lecture. I took it to the dealership here in Wichita, KS they changed the fuel filter, put it on the machine and everything checked out. Injectors were fine balace rate was fine...everything checked out. They told me they couldn't find anything wrong with the motor, but did witness the extended crank start. The EXPERTS at GM told the dealership to check my fuel, and it was borderline what they considered acceptable. I changed fuel, used high volume gas stations and the problem was still there. Dealership also said I might have a cracked fuel filter housing. I replaced that. NO good, just a $550 fuel filter change. Problem has gotten worse. Now it will only start with starting fluid unless I remove and replace the fuel filter and the fuel supply line the the fuel filter housing, and reprime. The the truck starts and runs just like it should for about a day. I also installed a raptor 100 lift pump with no help. Any suggestions
Reply With Quote
  #2  
Old 04-19-2011, 07:03 AM
Newbie

   

Default

wish i could help but im having the exact same problem with my 03 hope somebody can help with this. im new here but seems theres alot of input on this site thats very helpful.
Reply With Quote
  #3  
Old 04-19-2011, 07:22 AM
turbostang7's Avatar
Diesel Wrench

   

Default Re: No Start on my 03 Duramax

It realy sounds to me like its loosing prime somewhere, I would have a buddy help me and pressurize the tank with an air gun and go through and check for any leaks, then I would probably pull the lines and blow through them checking for any restrictions. How does the fuel filter look every time you change it? Is there a lot of junk in there?

Sent from my DROIDX using Tapatalk

turbostang7's Sig:2002 crew cab silverado, lb7 duramax, ported turbo horn, bills intake, ppe boost valve, straightpiped efilive dsp5 from idahorob
"I always thought those were two little sandbags to keep floodwaters from floating into my bum" Peter Griffin
Reply With Quote
  #4  
Old 04-22-2011, 11:37 AM
Newbie

   

Default

That's what I was thinking. I've already pressurized the tank, also installed the lift pump and still no leaks anywhere. The filters always look good, never found any debris or anything else in the filters.
Reply With Quote
  #5  
Old 04-22-2011, 04:00 PM
Newbie

   

Default

yup i just changed mine aghain same deal starting fine for now grrrrrrrrrrrr really frustrating. cut the old one apart and all was fine not clog at all. hope some other ideas come in any help would be great.
Reply With Quote
  #6  
Old 04-22-2011, 07:01 PM
turbostang7's Avatar
Diesel Wrench

   

Default Re: No Start on my 03 Duramax

First I would make sure the lift pump is working all the time check the ground carefully! Next time it does ut without doing anything else crack the bleeder and manualy prime it. Check all the grounds on the truck, im assuming there isn't any codes. If all that checks out possibly the ficm is bad but I don't know for sure? Just throwing things out there to try and hopefully hit it sooner or later . What is the rail pressure at? Could it possibly be a failing cp3 or maybe a fpr?

Sent from my DROIDX using Tapatalk
Reply With Quote
  #7  
Old 04-23-2011, 08:22 AM
Newbie

   

Default

i have codes in mine 1093,0380;0101 i just dont no were to start and dont want to keep i no it a glow plug code ,mass air,and fpr maybe? would the fpr cause this?
Reply With Quote
  #8  
Old 04-23-2011, 12:06 PM
BriteWhiteRam's Avatar
Diesel Bomber
Status: Homey da clown don't play dat

   

Default

the fpr would cause erratic fuel delivery to the rails

BriteWhiteRam's Sig:2006 Chevrolet Silverado LT 4x4 Crew, LBZ/ALLISON, PPE airbox mod, EGR blocker, EFI Live Tuned by me & Duramaxtuner
TOTALED:2005 Dodge Ram 3500 Laramie 4x4 quadcab, Cummins/modded 48re, edge/juice/attitude
Reply With Quote
  #9  
Old 04-23-2011, 01:28 PM
turbostang7's Avatar
Diesel Wrench

   

Default

i wonder if your glow plugs are even working, they have a bad rep of the connecting bar rotting out and only letting a couple work might want to check that! the glow plugs have power going into the drivers side iirc, and then through the bar to all of them, then jumps to the passenger side and does the same thing. if it rots out somewhere on the drivers side you could have 4 or less! might be your problem
Reply With Quote
  #10  
Old 04-23-2011, 01:47 PM
Newbie

   

Default

would that effect starts even when its warm? i will take a look and see if i can see anything corroded or broke. thanks for all the input. my first desiel and not to impressed yet. when it starts its great but other than that
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 09:15 PM.

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