[dawelder]

well guys this is my first problem with my yamaha f115 4 stroke fuel injected motor.What im getting is some dripping gas coming from the breather ,can anybody help with this problem or should it go to a dealer, thanks joe, It also idles down low when sitting idle and will cut off at times other than that it runs fine.the motor is a 2001 and it has been a great motor .

[robert graham]

maybe remove breather to see where gas is coming from...maybe a loose fitting, gasket, etc. maybe an easy fix.. Good Luck!

[rodbolt]

you either have a bad pressure regulator, a bad needle valve in the VST or an injector stuck open.
the VST is vented to the intake and if the needle leaks due to wear or debris fuel runs out the airbox .