Smokes Like Crazy - Suzuki ATV Forum
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post #1 of 4 Old 09-08-2019, 12:00 AM Thread Starter
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Smokes Like Crazy

I have a 2002 suzuki king quad 300, just replaced valve seals and compression is 100 psi with eletric start and throttle wide open, starts right up but smokes like crazy at startup and while driving it. Thinking it needs new rings but no clue what the oem size is, any ideas what it is, ideas and opinions appreciated.
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post #2 of 4 Old 09-08-2019, 11:58 AM
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I believe stock is 68.5mm

https://www.partzilla.com/catalog/su...00f/crankshaft

https://www.partzilla.com/product/su...3f02da433f5194

2002 King Quad 300
2001 King Quad 300
1997 King Quad 300
2012 POLARIS 500 RANGER
2011 YAMAHA 550 GRIZZLY
2008 Kawasaki 250 Bayou 2x4
2013 TaoTao 110
2014 TaoTao 125
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post #3 of 4 Old 09-12-2019, 08:03 AM
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I would have the cylinder Bored out to the next size and don't forget to order new top end gasket kit.
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post #4 of 4 Old 09-12-2019, 03:45 PM
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Since you have to take the Cylinder off anyway, you can check it with a bore gauge and make sure it is okay. Rings do wear down.

Since that motor has 3 rings on the piston, it could be that one of the rings is collapsed or worn out.

2013 Suzuki King Quad 500 AXi w/EPS
1990 Suzuki LT-4WD 250
and lots of snowmachines
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