11 350SXF bogging/hard starting/popping

I trying to help out my buddy that has a 11 ktm 350SXF and at first we where riding and the bike started to bog a little and then was starting to get hard to start. Then when you would start it u barely crack the throttle it woild die.

The valves are in spec . So we thought it was the fuel pump and today next dayed a pump. Well now its still hard to start and still has the bog and won't idle hardly.

I'm thinking it might be the tps ?? But am not sure

Any help would b nice

How's the plug look??

Check inline fuel filter. Could be dirty.

Mine did the same thing. It was the injector.

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