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LEGO
12-12-2007, 10:54 AM
My ko4 makes a mettalic rattling noise when I accelerate, most noticeable under higher boost. Could this be because of shaft play? And if so, could I fix this by having my turbo rebuilt? I searched and all I found about the rattling noise is that the wastegate rattles when it gets loose, but that's on deceleration. During deceleration nothing rattles, only when I am in boost. Thanks!

Johns_Orange_b5
12-12-2007, 11:18 AM
could be the stock cat if your not running a tp

SilverB5A4
12-12-2007, 12:15 PM
If you are sure its the turbo it is probably the wastegate if i had to guess but it might actually be like a loose bolt or nut on the exhaust rattling like crazy. Id say just give it a quick check with your fingers and see if you can move any of the bolts by hand (manifold to head, turbo to manifold, and exhaust to turbo).

LEGO
12-12-2007, 02:14 PM
I have a test pipe, so it's not the cat. The wierd thing is it's only when I'm boosting, as soon as I release the gas pedal, it goes away. I'll check for anything that is loose though. Thanks!

ILoveT
12-12-2007, 02:15 PM
Wastegate

GQ//S4
12-12-2007, 02:19 PM
It's because you touch yourself at night.

LEGO
12-12-2007, 02:51 PM
Ha! I love that family guy! "Professor, why did the dinosaurs become extinct?" "It's because you touch yourself at night!" Ha Ha

LEGO
12-12-2007, 02:52 PM
So most likely the wastegate? Can I fix it? Buy a new one? Or do I need a new turbo?

Wakeboardosurf
12-12-2007, 02:56 PM
Im pretty sure if its the wastegate actuator, you can tighten it up. If your still boosting like u should and its just rattleing, take a peek under there and see if the bolts hooking the wastegate actuator to the flap are tight, and the wastegate itself isnt loose.

GQ//S4
12-12-2007, 02:57 PM
Im pretty sure if its the wastegate actuator, you can tighten it up. If your still boosting like u should and its just rattleing, take a peek under there and see if the bolts hooking the wastegate actuator to the flap are tight, and the wastegate itself isnt loose.

Thats what she said......

LEGO
12-12-2007, 02:57 PM
Will do, cause it's boosting exactly the same. No drop in power or anything. Just getting really anoying with the rattling. Thanks for all the replies