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Old 07-06-2016, 10:17 PM   #4
Smallblock454
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Join Date: Jun 2014
Location: LB, Germany
Posts: 1,341
Hello patssle,

first, the sound quality of your video seems to be extremely poor. So diagnosis won't be right.

If the noise on the video is like in real life and if it's only at a special rpm i would say water pump bearing failed. To make shure remove the firewall cover, remove the belt and than check every component driven by the belt (water pump, pulleys, alternator, ac compressor…). In general the bearing will do a noise when you turn the component and or will have axle play.

This is the failed water pump of my other car. https://youtu.be/SXfJ5tTlvT4

Made a similar noise at 2K rpm when bearing failed.

But that would be a complete independent problem to the AOS smoke bomb. Even if you clean throttle body and intake as good as you can, there will still be some smoke for some time.

Regards, Markus
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