Hello everyone from autumnal ( correctly said ? ) finland.
I have a little problem with my Yamaha. Its 90AETO like topic says. Prime start and 171 hours on it. First when it came to me it was stored sideways maybe a couple of weeks if that makes a difference. Now the motor is on its place. Problem is that it idles roughly ~800 rpm, poppes and stalls. It stays running with 1200 rpm but still idles roughly. Immediately when you but the gear on the idle drops to 600rpm and works fine. Also with WOT it runs great. But when it drops to idle it starts to run roughly and stalls. Idle jets ? Fuel pump is new.
Maybe primestart ? In cold starts ~40F it raises the rpm to 11-1200 revs but drops to normal idle after 5-20 seconds ? Primestar "valve" not workind or bad diaphragm ? First it idles fine but after dropping the rpm to normal ~800 it begins to run roughly at stalls. Too much fuel ?
I have a little problem with my Yamaha. Its 90AETO like topic says. Prime start and 171 hours on it. First when it came to me it was stored sideways maybe a couple of weeks if that makes a difference. Now the motor is on its place. Problem is that it idles roughly ~800 rpm, poppes and stalls. It stays running with 1200 rpm but still idles roughly. Immediately when you but the gear on the idle drops to 600rpm and works fine. Also with WOT it runs great. But when it drops to idle it starts to run roughly and stalls. Idle jets ? Fuel pump is new.
Maybe primestart ? In cold starts ~40F it raises the rpm to 11-1200 revs but drops to normal idle after 5-20 seconds ? Primestar "valve" not workind or bad diaphragm ? First it idles fine but after dropping the rpm to normal ~800 it begins to run roughly at stalls. Too much fuel ?
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