weird noise! [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: weird noise!


red_o1LB7
04-27-2008, 03:15 PM
Just a couple days ago I noticed a weird noise. It only starts at 2500 rpm under acceleration,and hard boost, and goes away when i let off. Any help would be appreciated. 01 LB7 K&N and straight pipe.

Rhall
04-27-2008, 03:20 PM
Need more info, whats the noise sound like? Ticking? Pilot injector?

Rob

red_o1LB7
04-27-2008, 03:52 PM
sounds kinda like an electric motor bushing going out. It does it at 2500 rpm no matter how fast i am going.

dr_unspoken
04-27-2008, 04:34 PM
Id say if it's actually coming from the engine it is the Pilot injection , It is commanded to turn off at 2500RPM.

red_o1LB7
04-27-2008, 05:05 PM
It just started a few days ago. i have never heard this before. it does have 103000mi on it.