40 hp Yahama problem

[pondguy]

will run 1/4 throttal all day but when you go above half throttal it will go about 75 yards and bog to a idle, I changed the plugs ,fuel pump and fuel bulb nothing has made it change
if you let it idle for a few min it will go again,I also ck the fuel pick-up,any sugesstions?

 

[pondguy]

been looking at parts on ebay whats another name for the power pack?

 

[RDub]

Had a similar problem last year on mine. Does your fuel have any water in it? Mine had sat for several weeks in my basement and apparently collected condensation. It would start great, run well for a minute or two, and then lose power quickly. I drained the gas tank and refilled with fresh fuel and a can of Seafoam and it runs fine. I would make sure it is not the fuel before replacing any costly parts. Hope it works out for you!

 

[wrechin2]

Switch box. Is your bulb sucking together? Could be something in the tank getting suck up on the pick up or may have trash in the screen. Most aluminium tanks have screens in the tanks. Just a thought. Sounds like it is running out of fuel. You may also have someone pump the bulb when it does it to see if it is hard or helps. Just my thoughts....

This is what water in the fuel can cause!

 

[pondguy]

I tried sea foam,I will take the tank off today and try that,thanks for the suggestions

 

[pondguy]

Tank fixed it

 

[wrechin2]

emoThumbsup emoThumbsup

 

[RDub]

Awesome!