My daughters 1993 Buick Century has developed a troubling sound. We aren’t sure exactly where it’s coming from. Maybe the Engine. Anyways to me it sounds like something is rolling around, like in a dryer. Something loose maybe. When the engine is started and revved the rolling is still heard. …

Thanks we will look at that, although we did have the belt off to replace the water pump, didn’t look that far down.

You were correct. Thanks for pointing this out. ALthough the $350 job we are looking at isn’t pretty. Since we don’t have the tools to work on it.

Thanks for the reply. My ego is quite fragile and I enjoy my head swelling when I am correct. Of course, my family and friends will suffer. But they will get over it.

Hello, I think I have the same thing. Since it is a costly repair and I got my 1992 Century from a friend for free, I want to ask you this: what if I keep driving with this sound? I mean, what impact does this pulley-balancer separation have on the engine or other parts of the vehicle?

The harmonic balancer can be bought at most McParts stores for less than $100 and for the mechanically inclined with a few basic tools it can be replace in less than an hour. Continuing to operate with the rattling harmonic balancer will eventually result in the pulley seperating from the balance we…

Thanks much for the encouraging info! I hope I am mechanically inclined enough. The current symptoms are (this car has everything on one long serpentine belt): noise; with the engine not running, I can move the belt some distance up or down until something bangs on something (metal on metal; sound…

Engine knock?

Maintenance/Repairs

Rod-Knox August 10, 2007, 7:52pm 2

Remove the belt and turn the harmonic balancer. The pulley often breaks loose from the fly weight.

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Engine knock?

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