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Spark from harmonic balancer


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I had a 95 Buick Riviera that had developed a squeaky rattling sound.  Initially I thought that it was one of the idler pulleys for the serpentine belt.  Turned out to be the harmonic balancer.  The rubber had broken loose and was slipping.

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What is the condition of the rubber like? Is it sticking out beyond the metal? Is so its probably on its way out letting the outer ring slip. Maybe enough vibration to create a static charge? this is what mine looked like when it was slipping.

 

 

IMG_3135.JPG

Edited by BBHD
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3 hours ago, BBHD said:

What is the condition of the rubber like? Is it sticking out beyond the metal? Is so its probably on its way out letting the outer ring slip. Maybe enough vibration to create a static charge? this is what mine looked like when it was slipping.

 

 

IMG_3135.JPG

Brand new that's what my old one looked like tho lol 

 

 

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The cause of the spark is because the belt is slipping and generating static electricity, and the edge of the dampener is close enough to allow the jump.  Replace the belt with a "quality" green back belt (not the cheapest parts store belt) and I'm sure your arcing problem will go away. :thumbup2:

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