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reed valves

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im new to 2 strokin im puttin piston in top end ,checked reed valve .The reed is not setting flat on valve,looks to be curlrd up a bit can see thru it .Is this bad.

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Yes, thats a problem.

The reeds are supposed to be closed during the piston down stroke. No frayed edges or gaps.

This prevents the fuel/air charge from going backward through the carb.

It'll run but performance will be reduced.

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small fine openings are ok, just large enuf to see light thru, but if its big enuf to put like a paper clip thickness wire in the crack then its too much. For the very small openings you can try turning the reed over on the block and then they sometimes seal better.

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