Logo

1991 Yamaha 150 HP

bullisw

New member
"I am having trouble maintaini

"I am having trouble maintaining idle below 1000 rpm. Prior to launch it ran fine in diveway between 700-800 rpm. Plugs are gaped at .039, timing is within spec, changed fuel filters, primer bulb and anti siphon fittings. Runs like a top on plane, stalls at low rpm when docking, need to constantly hit the choke switch on start up. Could this have resulted in a carb float problem from towing to launch, the gas was topped off last year and a stabilizer added. Its with both motors."
 
"Sounds like the carbs need to

"Sounds like the carbs need to be rebuilt. The idle circuits could be stopped up, the carbs could be out of sync."
 
Back
Top