new isue on 115 inline 6 Mariner. water coming out from around spark plug

chris0061

Chief Petty Officer
Joined
Jun 17, 2007
Messages
446
About ready to part the motor out but thought I'd get some more help here. Got the old thing running for a while tonight and looked back and water was coming out of number one plug. Thought it was coming out of the threaded hole were I guess the temp valve goes but plugged that and still got water out from around the spark plug/ took the plug out and started it and water was a fine mist coming out. Did a compression test and 125 on the cyl. same as the others. Easy fix or not???????/
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,931
Re: new isue on 115 inline 6 Mariner. water coming out from around spark plug

More likely the water jacket is leaking from a previous overheat, if you look real close around the spark plug you will probably see the gasket poking out a tad so just replace it...
 

chris0061

Chief Petty Officer
Joined
Jun 17, 2007
Messages
446
Re: new isue on 115 inline 6 Mariner. water coming out from around spark plug

It was the cylinder block cover gasket. Replaced it today and problem fixed.
 
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