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I'm selling mine too! Don't want to have lemon issues with the new owner.

Hi fitchef4, I talked to my buddy who referred me to Tokyo Mods for the latest ECU kits, maps etc. I'll still get you the Colorado ECU shop info. He also mentioned in 2010/2011 the CRF250Rs had a decompression bump on the cam that caused starting issues also. I'm going to install my Steahly flywheel weight I ordered 5 years...

Yup bump started no problem! Just had to remember to stop on a hill!!!

Hi fitchef4, we still don't know exactly what the issue was. In 2016 after having our best local mechanic fight with it for 6 months including rebuilding the engine (wasn’t required), new injector etc etc, I took it to a Honda shop where they had the exact same 2011 CRF250R come in, they swapped the ECUs, same problem, then reinstalled...

PS I had new inject installed, engine rebuilt, even switched the EFI PROM with no results. Recommend replacing a worn kick starter lever, really helps! I'm also installing a Steahly flywheel weight, reprogramming EFI also supposed to make starting easier.

THANKS!!! I had the same problem with my 2005 Montessa Repsol Honda EFI 250 trials bike, just needs to have throttle closed all the way, so check there is slack on the throttle cables (see other 2011 CRF250R starting problem in other post). I like your recommendation: to confirm fuel pump pressure as pump diaphragms are known to leak.

THANKS!!! I had the same problem with my 2005 Montessa Repsol Honda EFI 250 trials bike, just needs to have throttle closed all the way. Another recommendation was to confirm fuel pump pressure as pump diaphragms are known to leak.

Thanks for the help guys. Right now the injector & fuel filter is being replaced. According to Honda they have had issues with the fuel injectors, which are fickle and small amounts of dirt & contaminiation prevent fuel pressure buildup during starting. It gets so bad that the fuel pressure bleeds off in less than 10 min, and after successive...

My 2011 250R is still in the shop (been over 3 months now), had the same problem: hard starting, would bump-start fine but impossible to kick. Rebuilt the motor, still wouldn't start. Problem now traced to the fuel injection electrical circuit (fuel pump was only putting out 12 psi fuel pressure), issue with ground fault in the voltage regulator/capacitor. Bike...