Injector Problems - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 03-19-2007, 12:25 PM   eBay Motors  #1 (permalink)
 
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Injector Problems

Want to know if there is a good site to see a breakdown of the Duramax. I just put my 02 in the shop, drained 6 gallons of deisel from the crankcase and trying to figure out where it came from. Dealer says injectors are bad. Any information appreciated.
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Old 03-19-2007, 02:23 PM   eBay Motors  #2 (permalink)
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Idont really know of any site like you speek of other than alldatadiy.com but you have to pay a subscription to get the info for 1 year!

But with out a doubt you do have a few bad injectors!
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Old 08-03-2007, 06:37 PM   eBay Motors  #3 (permalink)
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Dealer is probably right.

My '03 was in the shop for another issue. Tech ran a computer check on my injectors with his laptop. 2 were marginal so he replaced all 8 under warranty. When I saw the paper work, it noted that the customer complaint was fuel in oil.

I believe there is a 200,000 mile warranty on the injectors. Might be a real good idea to sit down and have a talk with your dealer. Didn't cost me anything to have mine done. 182,000 miles on the odometer. Can't really tell if it runs any better but glad to have the new and improved injectors.

Help out the technician who is going to do the work. Take it in the night before and let them have a cool engine to work on. If I were in his shoes, I'd greatly appreciate that.

Check the coolant level often for the first few days until all the air burps out of the cooling system.

Technician seems to think that folks who use their truck hard, pull loads and work them have far fewer problems with injectors than the folks who baby their DuraMax.

By the way.......... A DuraMax won't run on antifreeze. Had someone add a couple of gallons of green to my fuel tank. Was running up the road and the water in fuel light came on about 15 seconds before the engine stopped. Drained it out, replaced the fuel filters (yes got a fuel water seperator ahead of the factory filter) Didn't seem to cause any harm/damage to the injectors. Ran rough for a few minutes but rather than tow it, drove it home and changed filters again. This was at around 90,000 miles.
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Old 08-03-2007, 10:13 PM   eBay Motors  #4 (permalink)
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When having the dealer replace your injectors(under warranty) are they new injectors, new and improved, or are they actually the same thing he is pulling out?

Thanks,
Chris Zimmerman
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Old 08-03-2007, 11:05 PM   eBay Motors  #5 (permalink)
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I believe they are remanufactured or referbished. They are still the same design.
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Old 08-08-2007, 02:54 PM   eBay Motors  #6 (permalink)
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Quote:
Originally Posted by zman77 View Post
When having the dealer replace your injectors(under warranty) are they new injectors, new and improved, or are they actually the same thing he is pulling out?

Thanks,
Chris Zimmerman
They are new/refurb. 01-03 lb7 are covered under 200k/7year warranty
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Old 08-18-2007, 08:37 AM   eBay Motors  #7 (permalink)
 
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Bad Injectors

My 2004 Chevy Silverado 2500 Duramax Diesel currently has 87,000 miles, I have had to replace the injectors 3 times, the last set lasted only 5600 miles. No one can explain or give me a rational answer as to why, have had it suggested fuel in CA is bad for this engine? Filter has been changed regularly & the truck is extremely well maintained! Any input on why this keeps happening??? PLEASE PLEASE, ANY INPUT WOULD BE GREATLY APPRECIATED!!!
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Old 08-18-2007, 09:06 AM   eBay Motors  #8 (permalink)
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Originally Posted by lmantwell View Post
My 2004 Chevy Silverado 2500 Duramax Diesel currently has 87,000 miles, I have had to replace the injectors 3 times, the last set lasted only 5600 miles. No one can explain or give me a rational answer as to why, have had it suggested fuel in CA is bad for this engine? Filter has been changed regularly & the truck is extremely well maintained! Any input on why this keeps happening??? PLEASE PLEASE, ANY INPUT WOULD BE GREATLY APPRECIATED!!!
You could have something internal causing your problem, bad seats or something else, I am using a aftermarket fuel filter that filters @ the 2 micron level, when my injectors were replaced at 157k, they were full of crud, dirty fuel = crud.
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If this great nation cannot summon the will, the determination and the fortitude to persevere, then we shall forever be damned by the heroic dead who gave their last full measure of devotion; by all those who served & sacrificed in this noble cause.
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Old 09-08-2007, 08:25 AM   eBay Motors  #9 (permalink)
 
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GM needs to back their products!

I have had this truck to 3 different Authorized Chevy Dealers and none of them can figure out why this keeps happening? Apparently Chevy knew there was a problem with these injectors so they extended the warranty to 200,00 miles on the Vin 1 LB7 motor. Unfortunately now they are splitting hairs and say they won't cover mine after 100,00. I'm not quite sure because according to the bulletin it should be covered. I am so at witts end. I have never heard of a Diesel not lasting 100,00 miles!
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Old 09-16-2007, 03:44 PM   eBay Motors  #10 (permalink)
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my 01 has one bad injector and i think one more is going bad. I tried talking to a few local dealers and they tell me the only warranty was a 5 year on the injector pump only. I told them there is a warranty on the injectors and they say no so is there anywhere i can get the statement in print about the warranty. Also im in northeast ohio if anyone has had there injectors replaced around here let me know where. If i cant get them to done how much work is it to replace them myself
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