Yamaha 150 carbed idle issue

[spareparts]

go back thru the carbs, replace the fuel pump diaphragms. If you haven't done it since the last time, replace the fuel lines with new line as well(tank to engine). Make sure you get an OEM primer bulb(Yamaha, Merc, or Bomb)

[Blue_Runner]

Thanks for the advice Spare, already replaced fuel lines so I'll get to work on the the carbs, primer bulb, fuel pump and inline filter and see if anything changes.

[THEFERMANATOR]

I was gonna say it sure sounds like a plugged air bleed or something.