| old KDX, suddenly starts missing at midrange
It's an air-cooled '87. I rode it a few miles in the morning, and all was good. It sat all day, while I worked a checkpoint at an enduro. Then it started up just fine, but as I rode down the fire-road it hesitated and missed and stumbled - so I wound it out. It ran fine as long as the throttle was wide open; it starts easy and idles too. What might make the middle crap out? I've just pulled the carb, and it looks fine and clean. I'm a bit worried that it's old electrics, and either the magneto or coil isn't firing well at middle revs - but that sounds a bit far fetched. I stuck in a new plug, which made no difference at all.
Anyone seen this kind of behavior before? |