lack of power (well even less power) during cold weather

geezer · 04-17-2011, 08:13 PM

in the morning time on my way to work it could be around 40 degrees and the bike has no power, i can barely pull up hills at 40mph. while on my way home its 70degrees and the bike is back to normal again pulling 45-50mph up the same hills. my theory is its the lean jetting of the bike, when the air coming into the carb is cold there is not enough fuel to completly ignite the charge, and when its warm outside the airfuel ratio is back to normal lean condition. anyone ever tried moving the carb jetting up one notch? possitive impact even without modding the intake or exhaust?

04-17-2011, 08:13 PM	#1
geezer Senior Member Join Date: Mar 2011 Location: dahlonega GA Posts: 563	lack of power (well even less power) during cold weather in the morning time on my way to work it could be around 40 degrees and the bike has no power, i can barely pull up hills at 40mph. while on my way home its 70degrees and the bike is back to normal again pulling 45-50mph up the same hills. my theory is its the lean jetting of the bike, when the air coming into the carb is cold there is not enough fuel to completly ignite the charge, and when its warm outside the airfuel ratio is back to normal lean condition. anyone ever tried moving the carb jetting up one notch? possitive impact even without modding the intake or exhaust? __________________ 99 gz 250 and a currently dismantled fzr 1000 Login or Register to Remove Ads
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