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Overfilled the oil and ran it 500 miles.

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I was getting my bike setup for a trip to the mountains (9,000 ft elevation) and unknowingly overfilled my oil when changing it. Ran fine all the way to the mountains. Went to start it the next day, and it wouldn't crank, just the click sound. Charged the battery and it took a couple attempts to finally run. Went down the highway for maybe 8-10 minutes at 60-65mph and it started surging, lost power in the throttle, and died on the road. Drained a bit of oil, soaked up oil from the air filter, it started but died again. I ran it today for about twenty minutes and noticed it starts to surge when giving it a lot of throttle. It will also stall and not start for 5-10 mins if it has been running for too long.

Any ideas on what I could do to fix this?

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Clean all the oil out of your air filter and air box then add an off the shelf carburetor cleaner you'll find at any auto shop to your fuel and go ride it. The oil level should be at half when cold showing on the window. Had the same issue with my 2012 and this fixed it.

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That's not a huge overfill. As said, you've soaked your air filter with oil and have been sucking oil into carb. Won't hurt anything, but bike won't run well. Plugs may be carbon'd up by now.

Install NEW PLUGS, run Sea Foam in fuel for a tankful.

 

You're lucky you did not damage engine. You can "hydrolock" the motor from over filling and bend the rod. Also, it's easy to Pop out the countershaft seal. (seal that sits behind front sprocket)

If that pops out .... ALL engine oil comes out ... FAST!

 

When changing oil try to focus and avoid interuptions and distractions. Bike takes about 1.5 qts. I always fill to TOP line in the little window. Check level when engine is HOT, after sitting 3 minutes. That is the true level. Check on level ground with bike stood straight up.

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