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what happen to my DRZ400 it just quit!

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I was riding my 2003 DRZ 400 on a mountain road when it just quit. It was as if someone reach up and turned the ignition off. When the bike came to a stop, I tried the starter button. The starter will spin but will not turn the engine. When I tried to compression start the bike it was as if it was not in gear. If you pull the bike backwards you get compression. What happen to my bike?

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Start by checking cam timing and valve clearances.

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Mine did that and it was a bad spark plug. Before you go nuts ripping it a part, check the simple stuff, gas, spark, air....

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your discription reads almost the same as my

engine dieing........

Primary nut backed off..

pull the valve cover, check timing/cam position.

rotate crank by hand, confirm cams rotate.

sorry to say, you tagged the valves

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