1987 MERCRUISER 4 CYL... 2nd Problem.. (water from coolant resevoir exiting outdrive)

[kenrahe]

This motor has a closed circut cooling system (fresh water) and while trying to adjust shifting lever and cutoff switch i filled the coolant resevoir and noticed the water comming out of the outdrive... boat was winterized and all plugs opened and last seasons water drained..what would cause it to leak out of the outdrive......is my heat exchanger bad..the reseroir is on top of exhaust manifold is there a gasket seperating the two that could have gone bad!!!! or what hoses should i check....SORRY!!!! THE MOTOR IS A MERCRUSIERS 224/165HP INLINE 4 (Exhaust manifold and reseroir is on port side of motor)

 

[gonzo]

Were you filling the reservoir with water or antifreeze mix?

 

[kenrahe]

antifreeze mix

 

[jonr]

A crack caused by freezing? Hopefully not.

 

[gonzo]

However, you said that water was coming out of the outdrive.

 

[CDK]

Sounds like the heat exchanger exchanges more than just heat!
If it was originally installed, the age of 26 years alone justifies a replacement, but it may also be just a leaking rubber seal.