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Dirt Bike Brands - Other
getting compression back in 400F-Help!
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[QUOTE="will pattison, post: 271296, member: 19283"] you can easily check for a bent valve because you can press them by hand. if they don't move or don't spring back, then there you go. however, i've never seen it happen. you have to think about what could cause a valve stem to bend. the case for an impact on the valve is nonexistant as far as i know with this motor. if somthing happens to cause the valve to stick in the valve guide, then it might bend, but again, never seen it happen. it sounds to me like an assembly issue. wp. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
getting compression back in 400F-Help!
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