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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
2007 CRF250R Jetting?
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[QUOTE="Steve_o1989, post: 1424875, member: 88939"] I bought a '07 CRF250R a couple of weeks ago. It has been a hard starter from the get go, and I get a bog when coming off idle. I checked the valves, and the intake is well within' spec, but the exhaust is a little tight. I was suspecting jetting issues so I tore the carb out today to check. I have a 178main, 45 pilot, and 68 leak. I am unsure where the needle sits. The bike has a FMF factory 4.1 dual exhaust, but appears to be pretty stock aside from that. To me, the main jet seems too big, the pilot is too big (fuel screw has no effect) and I am unsure of the leak. I dont have a jetting chart, but where would be a good baseline to start off of? I want to go down to a 42 pilot, but I am not sure what to try for the main, or if I should touch the leak? I ride at ~2000' elevation and 60-86*F I will also change the plug, air filter and fluids. [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
2007 CRF250R Jetting?
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