Re: 54Evinrude Big Twin crankcase

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February 8, 2016 at 11:12 pm #31654
olcah
Participant

    US Member

    Fleetwin, If there was positive pressure in front of the reed plate, seems like it would cause bubbling at the bearing o-ring groove. Last fall I turned my Johnson motor over with a wrench with WD40 covering the top of the seal. Bubbles came up through the vertical slot. I will change the pressure valve for the tank.