Mercury, 9.8 Two Stroke. Brown band circa 1984.

by Colin Saunders
(Sheffield, South Yorkshire, UK.)

I have cooling problems, replaced impeller and have a good flow of water from tell tale, but the flow stops intermittently and restarts after about 20 to 30 seconds, then stops again for another 20 to 30 seconds, while the waterflow is interrupted I can feel the impeller blowing hot gasses through the tell tale, until the water starts to flow again. Can anyone tell me why the flow is getting interrupted ? Thank you..

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