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About jweidler

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  1. jweidler

    oil in cylinder head

    After a recent rebuild on my 05 crf450r the bike started with the first kick. After about 35 seconds it died and would not restart. I noticed that the oil level dropped dramatically. I took the head cover off and the top of the cylinder head was filled with oil. What could cause this? Would the oil be coming in through the valves? If so, is it also possible that the timing is off. I may have not lined up everything exactly and I don't know if one has anything to do with the other. Help! Thanks