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2012 starting issues

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Ok here's the lowdown

2012 kx450f

60 hrs of woods riding on stock top end

Leak down test 1% over 15 minutes

Has spark and fuel

No codes when hooked up to 12V and self check terminal grounded.

Started fine about 20x on the last ride (northern AZ trails)

Got home and washed it and now it won't do so much as backfire at me.

I've cleaned and di-electric greased every electrical connection including the CDI with no change. Switched my tank over to buddies bike and it fired up so the pump isn't bad.

I'm lost.

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Have also tried putting boiling water into bike to affect the water temp sensor and it still wouldn't fire. Valves check out perfect.

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