water in cowling 7.5 seahorse

abbiemax

Recruit
Joined
Aug 2, 2021
Messages
1
got a 1958 johnson seahorse 7.5, put in a tank of water and got it started, BUT instead of coming out of exhaust port water is filling up the rear cowling under plugs. need some help on what to look for. thanks
 

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racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,876
There is a passage way in the cylinder head.----The welch plug has fallen out.----You may be able to remove rear cowling to replace it.----Or pull cylinder head and install new head gasket after the repair.----Your choice.
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Easy fix by removing the rear pan. The Welsh plug is the same as used in carburetors. Your local outboard guy probably has a bunch of them collected in his "goody box".
 
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