Just ran my 1962 Mercury 500 4 cylinder 50 hp runs great but doesn't seem to be shooting any water out. I cannot remember if water comes out with exhaust or has another hole for the water stream. Any thoughts would be great.
at fast idle and above the exhaust should have some spray. the tell tale is on the right side rear under the bottom cowl. 1/8in hole. they clog up but still are cooling try a wire in the hole or compressed air. when in doubt feel the exhaust cover should be able to touch without burning your hand. hope this helps.