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04 kx125 starting issues

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Hi, my buddy has a 04 kx125 with a 144 Athena kit, and PC pipe. The other day his bike wouldn't start, so we bump started it and it fired right up and ran great. Well it still won't kick start but will bump start no problem. He changed the spark plug and hasen't cleaned the carb yet, but prolly will this weekend. Any thoughts or diagnosis on what it might be?

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How new is this kit? No kickstart is usually worn topend/low compression problem. Other than that would be clogged pilot jet.

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Idk how old the top end is. The guy he bought it off of had the kit put on it. The bike started up fine before this. He's gonna clean all the jets and we'll see if that makes a difference. Oh and it has good compression. Always has.

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Good compression???? And this is known how?

My sons bike had good compression one day, by the end of the day it was toast.

 

Do a compression test then report back please.

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