Is this fuel knock

F

Fox2boost

New member
May 30, 2011
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My passenger side injector is shot +-6 at idle and a few are border line so I got a Bosch reman set from Brent at lds.

I'm throwing them in this weekend but I let the truck go close to empty so I had to make an emergency full up at a sketchy shell gas station I never go to. I only put 20 bucks in so I could top off with new diesel and stanadyne when the new Injectors go in.

Now is where it gets weird. The next day I remote start my truck at work it ran for prob 5 mins. I come out at here a wierd woodpecker knocking sound from the pass side of the engine bay. I looked around didn't see anything out of the ordinary so I drive home. Truck felt great. Get home pull in the driveway still hear it.

I tried posting a video but this app won't let me it basically starts and stops at idle and sounds like a woodpecker.

im hoping if I picked up some water in the fuel and maybe a combo of having the bad injector is contributing to this noise. Brent seems to think the same.

The truck is also getting a nicktane adapter with a cat 2 micron filter at the same time as injectors this weekend

Any info is greatly appreciated
 
Kspen90

Kspen90

<<<got turbos?
Jul 14, 2011
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Burleson, Tx
Post a video when you get a chance but if its an intermittent sound it could be the famous duramax typewriter noise. How loud is the noise?
 
S

stockcar

New member
Dec 10, 2011
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stockcar

have 04 duramax with smoke issuse at idle then clears if rpms are kept at 1000 no smoke any one else with this issuse?
 
F

Fox2boost

New member
May 30, 2011
23
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Wasn't fuel knock injectors don't smoke anymore but the noise is still there. Sounds like a woodpecker. I think I might have narrowed it down to the vaccuum pump. I ran it with out the serpentine and It went away. After I spent 2 grand on a set of sticks 80 bucks doesn't sound so bad. I'll keep you guys posted if it fixes it.
 
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