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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 01-13-2020, 11:15 PM   #1 (permalink)
Trugambizzi
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Fuel knock Help!

HELP!!!02 GMC 2500 HD LB7. 4x4. Very well maintained. Intermittent fuel knock.

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Old 01-13-2020, 11:28 PM   #2 (permalink)
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Welcome to DieselPlace
I moved your post over to its own thread for better views and responses to your issue.



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Old 01-14-2020, 06:38 AM   #3 (permalink)
Rvn4me
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Normally fuel knock is associated with bad injector/injectors.
Any way to do a injector balance rate test?
As you read some people put this in or some other lubricant.
Super Tech brand of TC-W3 2-stroke from Wal-Mart.
https://www.dieselplace.com/forum/63...ease-help.html
https://www.dieselplace.com/forum/63...knock-lb7.html
https://www.dieselplace.com/forum/63...ure-knock.html
https://www.dieselplace.com/forum/63...ons-smoke.html
https://www.dieselplace.com/forum/63...ing-sound.html

Last edited by Rvn4me; 01-14-2020 at 06:50 AM.
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Old 01-14-2020, 04:05 PM   #4 (permalink)
Trugambizzi
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The injectors are newer. Less than 4K.

I’m really starting to think that the fuel filter could be bad, and a combination of getting a very high sulfur diesel fuel content from some **** gas station by my house
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Old 01-15-2020, 07:01 AM   #5 (permalink)
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Quote:
Originally Posted by Trugambizzi View Post
The injectors are newer. Less than 4K.

Iím really starting to think that the fuel filter could be bad, and a combination of getting a very high sulfur diesel fuel content from some **** gas station by my house
Let use know what you find out.
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