Knocking sound

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Knocking sound

08-09-2016, (Subject: Knocking sound )

Post: #1

overshot Offline

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Knocking sound

Ok fellas,
I have a 2012 peterbilt 386. With a cm 2250.
It was de mandated in Ga. Since it was de mandated in may it has a hard tapping or knock if you want to call it that. The knock starts at 1300 rpm and from 20 psi boost and up. Loaded or empty it does it. It doesn't knock when using engine brake.

Any ideas to what it could be.

I haven't been able to get back to GA yet, to get it checked out. But, I have scheduled an appt. for the 23rd to get it in.

Am I destined to drop a lot of cash soon.

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Messages In This Thread

Knocking sound - overshot - 08-09-2016

RE: Knocking sound - overshot - 08-09-2016,

RE: Knocking sound - biscuits and gravy - 08-09-2016,

RE: Knocking sound - Waterloo - 08-09-2016,

RE: Knocking sound - overshot - 08-09-2016,

RE: Knocking sound - hhow55 - 08-09-2016,

RE: Knocking sound - in2trux - 08-09-2016,

RE: Knocking sound - overshot - 08-09-2016,

RE: Knocking sound - in2trux - 08-09-2016,

RE: Knocking sound - Rawze - 08-10-2016,

RE: Knocking sound - overshot - 08-10-2016,

RE: Knocking sound - snailexpress - 08-10-2016,

RE: Knocking sound - overshot - 08-10-2016,

RE: Knocking sound - Hammerhead - 08-10-2016,

RE: Knocking sound - overshot - 08-11-2016,

RE: Knocking sound - Dcolumbia - 08-14-2016,

RE: Knocking sound - overshot - 08-21-2016,

RE: Knocking sound - Hammerhead - 08-21-2016,

RE: Knocking sound - gatow900 - 09-05-2016,

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