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drz400 dies at idle when warn

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Just bought this bike few weeks ago 07 Drz 400sm. took it for test drive before I bought it, It ran good no problems. Drove it around my house alitle then washed it. Now when it warms up and its at idle it slows down and dies and will not restart at all untill cooled down.

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Check(sniff) your oil for gasoline contamination. If it's there your petcock has failed and is allowing fuel to the carb when "off", and your needle seat or needle valve body o-ring is bad allowing that fuel to continue on down into the cylinder. If the oil is contaminated, don't run it until you have replaced the petcock, fixed the carb and drained/replaced the oil & filter.

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