Bogging down 150 HP Johnson

[kingdd115]

Had carbs rebuilt lasy July. It ran fine all last summer. Now bogging down @ full throttle. It didnt do it all the time, but gets worse each time. I replaced all fuel lines addes fuel/water separator. Thought the fuel separator was problem and took it back out. Still no improvement. Suggestions please?

 

[jonesg]

Re: Bogging down 150 HP Johnson

Draw some fuel and leave it in a glass bottle to see if water seperates out at the bottom.

Try a temporary plastic fuel tank to eliminate the onboard fuel system.

It helps to post your year and model number too, does it sound any alarm buzzers?