Water In Top Cylinder

[catfishmike75]

75' merc thunderbolt 3 cyl water n top cyl...replaced water jacket n exhaust gasket twice...need help

 

[GA_Boater]

Welcome Mike.

The thread you posted in - http://forums.iboats.com/forum/engi...-1975-mercury-200-20-hp-waterpump-replacement - is unrelated to your problem, so a new thread was started for ya.