Question about 1979 Yamaha XS 650 SF
I have 80 xs 650 special. i have an intermittant hesitation from around 3500 rpm to 4000 rpm sometimes after that. its almost like i'm running out of fuel like a hiccup. it's kind of a jerking. sometimes i can "power" through it sometimes not. i'm thinking something with the carbs? any help would be great. also a little "popping" from lefthand exhaust on deceleration doesn't seem to be leaking air past carbs to cylinder.thanks.
Most likely the carbs need cleaning and adjusting. You may want to richen the A/F ratio when you do it. They are set really lean from the factory. I would go 1/4-1/2 turn out on the A/F screw.
Posted on Jul 22, 2009
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Posted on Jan 02, 2017
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