Question about 2005 Honda CRF 250 R

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Back fire wont start by kick but will if i jump start it cfr 250 r

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This is normally caused by a tight intake valve or pluged pilot jet. Check your valve clearance. Usually the right intake valve will close up first and then the left. If you have to go more than 3 shim sizes smaller to get the right gap your head will need to be rebuilt by a machinist. Google crfheads to find a good rebuilder.

Posted on Aug 06, 2010

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