2011 TE 310 quits running when hot

While riding tight single track on 3 days in 90s temp the bike would stop running. It would start up only after letting it cool down and run good until the heat got to it again. The fan was running all the time. It seem to be a fuel problem. While letting it cool removed gas cap and seat for 10 min also adding fuel from another bike would speed up the cool down. The next 2 days of riding in cooler temps on similar trails no problems. Any thoughts on what I can do to cure this problem?

Try putting heat shield on bottom of tank and I wrap it around my fuel line.

Could be vapor locking? Could be temp switch going bad not kicking on fan soon enough?

Could be water temp senso going bad making bike lean out?

Couple thoughts.

Fuel pump has very close tolerances. When varnish layers build up inside the pump, excessive heat will expand the internals so that the pump can no longer spin. The only fix is a new fuel pump. I had the same symptoms with my 10 TE450.

OlderHuskyRider is likely right. His advice helped me when I had the same issue.

Next time it won't start, turn the key off, then turn it back on and listen for the fuel pump to spool up (listen for a squeaky-whine sound). If you don't hear it, CaliforniaCycleWorks has a replacement pump with your name on it.

I agree with OHR but I would like to add: your bike shouldn't be getting that hot under those conditions (unless it's all uphill single track)- so the fuel pump issue may be a symptom of another problem.

If you're ever riding in 2nd gear or higher the fan shouldn't be running constantly. Maybe you need to start looking for your over-heating problem. make sure your t-stat is working, coolant is circulating (level & impeller), radiator fins are clear.

fuel pump- you *might* try recirculating a quart or two of carb cleaner through it for 15 minutes or so. might work, might ruin things- I dunno. watch the pump temp and keep it in liquid. (I'm thinking Berryman's here or something similar)

good luck.