150hp Johnson 1987

[Paul fun fish]

Good afternoon hopefully everyone is well
have a new project and a new problem motor runs fine on a hose or idling in the water but is soon as you throttle up the motor bogs down but eventually dies any help here would be greatly appreciated

 

[racerone]

A compression test is what you need to do.---Followed by a proper spark test.-----These motors will fool you.----They sound good on a hose running on 4 of 6 cylinders.