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Evinrude 4hp deluxe power issues

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  • Evinrude 4hp deluxe power issues

    1987 Evinrude 4hp Deluxe
    Model # E4RDHCUD

    I just purchased my first outboard, a clean 4hp Evinrude Deluxe to learn on though hands on expierence. Since acquiring ive installed a new Water Impellar Kit, Carb Kit, Fuel Pump Kit, Lower Unit Oil, and new clean ethanol free gas in a clean tank.

    Problems.... Motor starts easy in 2-3 pulls and runs/sounds/shifts great in a tank. However once mounted to my 15ft Gheenoe the motor seems to bog down at WOT allowing me only about 5-6mph. I manipulate the high speed needle and see slightly improved results for only a few seconds with no speed increase and then it bogs back down. I see the best results with the throttle set just before WOT. Still it seems to no maintain the increase and drops the load. Any suggestions/advice on where to look next? Im new to outboards but have patience.

    Thanks, Tom

  • #2
    Additionally, I'm trying to see what plugs to put into my motor. All that is listed on the evinrude site are plugs for the 4hp deluxe from 89-01. Picks up with the 4/ excel with a different plug. Which plugs should I use? Ql86c or Ql77jc4?
    Thanks

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    • #3
      Can use Champion L77J4 or QL77J4 plug
      Regards
      Boats.net
      Evinrude Outboard Parts

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      • #4
        try a new fuel pump

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