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2010 WR250R stalling out, engine light on

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Any suggestions on what to check before taking to dealer? When sanpping the throttle, or letting it idle down, bike stalls out. Red engine light is on. Wondering what to check. Bike has PC5 fuel prgrammer, ran fine for 6+ months in its current configuration. Could this be a valve thing, or just some EFI issue? Do the injectors need cleaning, like jets in a carb? Can dealer pull fault codes?

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could be low pressure from fuel pump or a leaking injector. my bet is on the fuel pump though.

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Turns out if was a faulty air pressure sensor, the dealer was able to get the failure codes. $240, oh well could have been worse.

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$240, oh well could have been worse.
It could have been better. Get the codes yourself by reading the manual and order the sensor at ServiceHonda:

SENSOR, PRESSURE___2C0-82380-00-00___MSRP $96.51___ServiceHonda price $66.12

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