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    1979 Johnson 70hp will not rev up

    Hi, 1979 70hp 3cycle Johnson Had it out on the water, going great guns, full speed for 20kms or so, when it idled down and refused rev up when throttle was applied, could only tick along at a bit over idle and couldn't rev up past that. For whatever reason it can't generate power under load...
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    1979 Johnson 70hp over-revs

    Gday, I've got a 1979 Johnson 70hp here, haven't yet used it in the water. The motor reaches very high rpm when the throttle plate is only just fractionally open. If I was to go to WOT it would surely damage the engine. This is being tested in a 44 gallon drum full of water to provide some...
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