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    Rebuilt Johnson 120hp no start, doesn't even want to start

    I just had the powerhead on my 1985 Johnson 120hp V4 outboard rebuilt, I removed all hoses and wires from the original powerhead carefully labeling each and every one that way I wouldn't reinstall them incorrectly later. Everything is now hooked up without issue. The engine has great compression...
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    '85 Johnson 120hp Powerhead Replacement Questions

    Howdy all, Last year I purchased a 17 ft Sea Sprite with a Johnson 120hp V4 outboard. The engine had a blown piston in cylinder #4 when I purchased it, due to the engine being over propped. I recently purchased a remanufactured powerhead to replace the blown one. I have experience in automotive...
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    1985 Johnson 120hp VRO V4 w/ a hole in piston #4

    Hello, I recently bought a boat with a bad Johnson 120hp outboard. This is my first outboard in many years as I usually deal with I/O powertrains. This engine's powerhead will have to be rebuilt but I'm not sure what can cause a hole to form in the center of the piston and make the piston almost...
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