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  1. R

    surging 48hp 1994 Johnson, more info

    Here's the latest on my surging problem. With engine turning 5000-5200 rpm engine runs fine for 5 minutes or so then starts to surge and lose power. I reach down and the primer ball is soft. I give it a few squeezes and the engine picks up and runs fine for another 5 minutes. There is no inline...
  2. R

    48 hp Johnson surging

    Help! I recently bought a small RIB with a 1994 Johnson 48hp. Motor runs fine up to full throttle but when I go to full throttlle (in the 4500 to 5000 rpm range)it surges until I back off a bit. The fuel is fresh, tank is clean, hoses look good. spark plugs are very good, compression is good. I...
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