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670 motor knocking?

J
Oct 25, 2008
41
0
6
36
Waupaca, WI
hey everyone, i got a 1999 summit x 670, ever since i bought it 2 years ago at idle it sounds like a knock comming from the motor, but when you get going it doesnt make this noise, I have been curious about this for a while and i'm wondering if its a bad thing? any help will be greatly appreciated!

Thank you, Jerome Polly:)
 
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