LuckyStar64
PR Addict
What's up gang!! If you know me-- you know I'm obsessed with play riding on trail bikes. So I have my '07 CRF230F set up with an '05 carb, jetted at 48/120, stock '05 needle with the clip in the 4th position down, air screw set at 1 and 1/2 turns out as what's described as "optimal" via countless dyno runs done by Mike Coe. The bike has run flawlessly. Last night with higher heat and humidity-- it started sputtering on top?? What exactly is happening with higher heat and humidity? My own minimal logic tells me that this richens the mixture due to denser air, and water content? I'd THINK you'd have to go a half turn OUT on the air screw at that point to lean out the mixture? It ran like it was running out of gas though? So the question is-- what needs to be done to compensate for high heat and humidity? Kinda confusing? --L*64