2011 TXC 250 hard to start and wont take throttle.

My TXC all of a sudden wont rev up and now is hard to start, I have drained the fuel and checked the valves (witch were in spec) and replaced spark plug. Not sure if I have a clogged fuel injector or a bad fuel pump. Fuel pump primes fine when i cycle the kill switch and it does not matter if bike is hot or cold. Any input would be welcome thanks in advance.

Temp sensor failure?
Water in TPS sensor or corrosion in connector?

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Possibe loose air boot to the throttle body

I'd check to see if the flywheel carter key has been sheared off.. See if you have spark- get a spark tester or pull the plug out and ground it on the cylinder head. Look for spark on the electrode while you turn the engine over.

I would check the spark plug to see if you have spark and if it's wet or not. Then I would check the air intake boot for cracks, if they were all good I would start thinking down the TPS line

I replaced the fuel pump and temp sensor and now it running like new. Thanks for the response.

Good to hear you got her running