Reply To: 1968 Johnson 40hp overheating

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June 9, 2021 at 11:37 am #239798
Don
Participant

    US Member

    OK, well I would definitely have a look at the poppet valve seal under the plastic housing….
    Frank explained why that change was made to the water pick up, adding that copper tube down there…Something about making the housing more durable and distort less? In any event, make sure it is properly positioned in the grommets and the water tube housing that is screwed to the impeller housing isn’t damaged creating water/air leaks….