Yz250 sputtering before hitting power band

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Jan 11, 2019
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#1
My 02 yz250 sputters for a couple seconds before hitting the power band. It cant be my carburetor because I have it Jetted correctly and I am sure it's my power valve so why and could my power valve be causing this I know there is something wrong with the power valve becuase it has lots of play on the push rod side