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    Mercury 150 efi overheated now sputters while accelerating & fouling port side plugs

    Mercury 150 efi overheated now sputters while accelerating & fouling port side plugs My 2000 Mercury 150 EFI overheated due to impeller breaking. I replaced impeller and complete poppet value assembly and engine now run cooler than ever, perhaps too cold? The problem I'm having is during...
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    Manual Release Valve Stripped and Engine Stuck in Down Position

    I have a 2000 Mercury 150 EFI. The Manual Release Valve on the Starboard side was partially stripped and dry rotted (made of white plastic/nylon?)... well by trying to turn it I broke it all the way off. I want to attempt to take it out using an easy out or reverse threaded drill bit but is it...
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    Help! Where do these wires attach?

    I just purchased this boat/engine and pulled off the engine cover and noticed these 2 wires (shown in photo) were not connected. Does anyone know where they are suppose to attach? Both are on the Starboard side and the top wire is Purple and the bottom is Brown. It is a 2000 Mercury...
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