My 1997 johnson 70 runs good after warm up than go to full throttle runs fine for minutes than engine shakes violently
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Johnson 70
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Maybe a bent or broken prop, bent prop shaft, jumping out of gear, misfire on a cylinder?
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thanks for this info ,i just changed prop, as well as coils, i took vro unit and installed new fuel pump not water tested yet on pump and coils, i changed coils due to a redish color spark i understand i need a blue white color , i did not check for bent shaft however and i will again thanks for this info i need all the help i can get
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