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Suzuki DT140 Momentary High Idle After Starting

M

Mike F

New member
Been prepping 1990 DT 140 after winter layover. Engine starts fine, but high idles around 1600 RPM for 15 sec. or so before dropping down to 700 RPM. It does this even when warm. And every time. I don't ever recall this in the 7 years I've owned it. Replaced throttle position sensor and plugs last year. It seemed to be running fine when put in storage. Cables are free and I don't see anything moving under the cowling. ANY IDEAS ? Thanks
 
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