2012 yamaha 300 overheating NEED HELP!!!
I have 2012 Yamaha 300hp 30" outboard, the motor is not pissing at all when in the water. it will overheat after less than 10 min at idle. i have taken the lower unit off, the impeller and water pump are both in great shape. I also hooked a air hose up to the pee hole and blasted some air through it hoping to break up any clogs with no luck. when we hook a hose up to the bypass on the side of the motor it will barely ****, when i say barely i mean barely, its such a weak stream it will run down the side of the motor. hoping someone can help me or will know someone who will.