Is the impeller plate on the water pump sealed tight to the gearcase? If not you could be sucking air. Also, are the water tubes properly seating in the grommets? Any holes in the water tubes? Is the water tube gasket on the pump housing sealed good?
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp
“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."
