2011 Tc 250 Won’t Start

Back story: a few months ago I replaced the cylinder head myself and everything was running smoothly after. Lately it seems the spark plugs were fouling a lot quicker (NGK Iridiums) and I’ve been having to kick a lot more before it would start. This past week I’ve replaced all the fluids and spark plugs and started up second kick. Just in time for my cross country trip. Got to Ouachita National forest to ride and it ran fine for the first 20 minutes. I was going up hill and it began the sputter so I down shifted and gave it more gas, after another 100 yards or so it sputtered again and killed over. Will no longer kick start and when I tried to bump start it will die after a few seconds either while gassing it or not. Since I’m traveling I don’t have my full tool set so I was only able to check spark plugs and the plug seemed to be fine. Cam chain and tensioner are still tight as well.


Any thought?

Check the throttle body hasn’t detached from the engine. It can happen after a backfire.

It sounds like a fuel pump pressure issue.

Can you start it with starter fluid?