Question about 2003 Yamaha YZ 250 F
Sometimes it bum starts .sometimes 25 kicks.one time i cleaned carb and put new fuel in started in 2 kicks only to go back to hard starting at riding area.bought it used seems stock.seems to have lots of compresion and when it does start it runs perfect.ihave killed a new set of boots in one summer
I used to own a yz426f and it had the exact problem... a fresh plug will fix your problem. change the plug and the bike will run great. also don't start the bike and shut it off , my bike would be fine if i started it and rode for a while getting to the proper heat range help save the plug. if my bike didn't start in one or two kicks it was usually the plug.
hope this helps
Posted on Apr 05, 2009
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