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Discussion Starter · #1 ·
being unfamiliar with diesels and quite familiar with gas motors my lly sounds like its knocking. From what i have been reading it potentially is the injectors. i have an 05 lly that i did the injector clean on and drove it right after that with no problem. I shut it off and started it back up and its knocking again. Are the injectors bad? harness? I've also read that harness 4 and 7 go bad on the lly's as well. please advise. thanks
 

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Discussion Starter · #2 ·
Also noted when i drive the vehicle its perfectly fine for a little bit and accelerates alright but then it will start to make that knocking noise and I get major power loss.
 

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Check the wiring harness by the alternator, also check injector harness on especially on #7 (passenger's side rear) and #2 (drivers side front).
 

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Discussion Starter · #4 ·
Thank you. I did a search on those and found the ice pick trick that seems to be a common problem on the lly's. hopefully that solves the problem since injectors seem to be very pricey.
 
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