76 merc inline 6 water tube clogging

tnjohn

Recruit
Joined
Apr 15, 2009
Messages
2
new guy with inline 6 replaced impeller and water runs good for a few minutes then pisser gets clogged with small chunks of white corrosion. is there some way to clean out the water jacket by pumping through a solvent or something while running motor in test tank or trash can? any ideas welcome???? thanks for the help on the tilt question.
 
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