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Matt, Engineer
Category: Motorcycle
Satisfied Customers: 20805
Experience:  Honors degree in Mechanical Engineering, worked 8 years as a Formula 1 engine engineer.
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My 1987 Yamaha virago 1100 manual choke will start but wont

Customer Question

my 1987 Yamaha virago 1100 manual choke will start but wont accelerate. pulle d plugs and only getting gas to 1 cyclinder
Submitted: 8 months ago.
Category: Motorcycle
Customer: replied 8 months ago.
while idling un burnt fuel will be blown out the exhaust
Expert:  Matt replied 8 months ago.


I'd start by checking the carbs are all opening at the same time

as if they are imbalanced then they will not pull air and fuel through at the same rate

if the butterflies are well matched then I'd strip each carb down to remove the main jets and blow through the jet and the supporting gallery with compressed air