Yamaha 85 shutting down

[mickybrun]

One of my engines (Yamaha 85) shuts down when I put it in gear. I changed the racors, the engine's fuel filters and the sparkplugs and used the boat today and same thing happens. The engine is flooding with gas because if I start it up and let it idle for around 5 minutes it will stay on and as soon as I put it in gear it will shut down. To start it I have to accelerate it a little bit and it starts and it smells like gas and if I accelerate it more in neutral I can see oil in the water. A test that I did was turned the other engine off and with that bad engine I tried to plane and it will not pass the 3000 rpm, if I do the same thing with the good engine, that engine will get to 4000 rpm and using both I can notice that the good engine has to help the bad engine to plane the boat.

I took off the carbs and opened them up to see if one of the floats was sticking but all were good.

What do you guys think it can be??

[mickybrun]

Someone over at THT suggested the fuel pump might be bad, what do you guys think?

[mickybrun]

no suggestions??

[jb123]

have you EVER replaced one ?

[mickybrun]

On diesel engines, but I've seen that this ones are the in and out of fuel and 2 screws with a gasket in between the block and pump. It should be pretty easy. Never on this boat. I bought it a couple of months ago.

[mickybrun]

Any other suggestion to check before heading to the boat??