Carolina Adventure World Trail 4 and 17.MP4

[@mitchelldawg]

Thanks for the reply, we are gonna try a leaner jet on the idle side and see how it does.

[@skuroa]

My bike is an 2003 YZ 250, and I never have fouled a plug. I run 40:1 fuel ratio with the Rad Valve and 2 sizes leaner on the main jet versus stock. At the time of this video the bike had a leaking crankshaft seal, and would blow oil out the exhaust, but never would foul a plug.

[@davidcochran7572]

Sounds like a jetting problem on that yamaha, possibly dropping your needle in the carb to lean up the low end.

[@mitchelldawg]

Nice riding, looks like the best time to go riding is when it is raining. May we please have specs on your bike and fuel mixture ratio? Have a 2001 YZ250 that has been fouling plugs at low speeds. We can run it hard all day and it won't fail, but in the tight wooded sections it will foul at low speeds. Does yours foul plugs? We ride our bike similar to the way you ride in the slower sections.