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1976 johnson 75hp stinger

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  • 1976 johnson 75hp stinger

    my 75 stinger boggs out at full throttle,after a couple times of that then the plugs are fouled.I put it in nutrel raise the throttle wide open and it want pickup to wide open smokes a little.Can someone please help me with this

  • #2
    To start with, motors are not supposed to be revved full throttle in neutral, one good way to blow a motor. It sounds like, you should check compression on cylinders, and if compression is good, then either you have some bad fuel, or carbs are dirty? It's difficult to know with the limited info/ history you've posted here?

    Good luck.

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    • #3
      1976 johnson 75hp stinger

      my 75 hp stinger is on a 15ft hydroglas boat ,can anyone tell me what size propeller should be on it.It has a stainless 19 pitch on it now and it will not plane out it just boggs down at full throttle,checked compression as you said all three are 118,120.when the boat is completely empty of gear and just me it will after some struggle plane out
      got fresh no ethanol gas mixing 16oz to 6 gal.,I think the pitch is to high
      anybody got anysugestions?????

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