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Duramax First Generation: 2001-2004 (LB7) Discuss the first generation (2001-2004 LB7) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 02-01-2009, 10:48 AM   #1 (permalink)
TOPSHELFdmax02
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Replaced glow plug controller and glow plug fuse and still no start...

I replaced both the controller and the fuse for the glow plugs but it still wont start... Now if onoly a couple of the glow plugs are bad will it still start or no? I almost got it started on ether but i really dont like spraying a bunch of that in there... Im getting power to the controller and out of the controller...

Any help will be greatly appreciated, i really dont wanna have to take it in...

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Old 02-01-2009, 11:00 AM   #2 (permalink)
JST
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Pluge it in for a hr. and try WD-40 to get it going,if you have 2 or 3 bad it will stell start

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Old 02-01-2009, 11:02 AM   #3 (permalink)
TOPSHELFdmax02
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my block heater is bad too... its pretty warm out today, its about 40 outside so i dont see why it wont start.
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Old 02-01-2009, 11:28 AM   #4 (permalink)
JST
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Quote:
Originally Posted by TOPSHELFdmax02 View Post
I replaced both the controller and the fuse for the glow plugs but it still wont start... Now if onoly a couple of the glow plugs are bad will it still start or no? I almost got it started on ether but i really dont like spraying a bunch of that in there... Im getting power to the controller and out of the controller...

Any help will be greatly appreciated, i really dont wanna have to take it in...
Clip a light on the rail that runs down the side of the block on the glow plugs and see if the plugs are geting power on key up
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Last edited by JST; 02-01-2009 at 11:29 AM.
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Old 02-01-2009, 12:08 PM   #5 (permalink)
stroke250
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are you sure its not fuel related?? i would try having someone pump the primer while you try to start it.
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Old 02-01-2009, 06:23 PM   #6 (permalink)
dmaxvaz
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Quote:
Originally Posted by stroke250 View Post
are you sure its not fuel related?? i would try having someone pump the primer while you try to start it.
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Old 02-02-2009, 12:41 AM   #7 (permalink)
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checked the prime twice and i have fuel... even pumped it while starting and still nothing. never had a problem with the fuel before... i've had the 0380 code for awhile but it still started fine... and one morning up north the truck didnt wanna start and it took some coaxing with ether to finally start and i had to let her run all nite just to get home the next day, and no problems, and no loss of power while driving... she just wont start.

im pretty pissed off at this point and idk what the hell is wrong... im def. not taking it to the dealer tho... cuz everyone knows they'll just bend me over... im gonna see if this mechanic i know can take a look at it but if anyone else has any advice please let me know... this is my daily driver and my baby LoL, i need to get her running!!
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Old 02-02-2009, 12:53 AM   #8 (permalink)
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i may try putting a new fuel filter on too cuz i changed the fuel filter before i left for upnorth, and it started really acting up after i did that... even tho its a brand new filter it may faulty or somtin...

is that worth a try??
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Old 02-02-2009, 06:01 AM   #9 (permalink)
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I ran without any glowplugs for about a month here in colorado. Temps down to 40 degrees at night. Took longer to start and had smoke at idle until it warmed up, but didn't have any problem getting the truck started.

You must have more than one problem.
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Old 02-02-2009, 07:01 PM   #10 (permalink)
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Get your fuel rail pressure checked while cranking on it. Might be injectors going out.

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