ATV Reviews
All Terrain Vehicle Review Guide
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Revealed: How To Properly Take Care Of Your ATV
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Hot Topic: The Importance of Proper ATV Safety
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4 Tips When You Are In The Market For A Used ATV
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ATVs 101: 3 Important Basic Care Tips For Your New ATV
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Scott W posted: 29 Sep at 3:23 pm
no bad crank seal and is ******* air.
guardrailjim posted: 02 Oct at 5:34 pm
Japanese motorcycles have oil in the flywheel cover to lubricate the starter clutch.
China copies Japanese designed machines – so it’s probably normal with yours.
By 2003, most vehicles use electronic ignition and the timing is not adjustable.
Backfiring through the carb would be a problem with the intake valve.
If the adjustment was tight, the valve would leak – when the ignition fires, it would blow back through the intake.
Try adjusting the valves.
bikinkawboy posted: 02 Oct at 6:43 pm
I agree with guardrail jim. In addition, don’t forget to check for vacuum leaks between the carb and cylinderhead or any vacuum hoses.