Antifreeze leaking from stern drive closed cooling system 470 merc
 

Please Help!
I am leaking antifreeze from stern drive inlet, I have a closed cooling
system, antifreeze drips out through propeller shaft.

Antifreeze leaking from stern drive closed cooling system 470 merc
 

Bossi, if I had to guess,.. your power steering cooler has a broken
tube.

-Topher


Bossi wrote:
Please Help!
I am leaking antifreeze from stern drive inlet, I have a closed cooling
system, antifreeze drips out through propeller shaft.

Antifreeze leaking from stern drive closed cooling system 470 merc
 

Check your heat exchanger.
Jim
"Bossi" wrote in message
oups.com...
Please Help!
I am leaking antifreeze from stern drive inlet, I have a closed cooling
system, antifreeze drips out through propeller shaft.

Antifreeze leaking from stern drive closed cooling system 470 merc
 

wrote:
Bossi, if I had to guess,.. your power steering cooler has a broken
tube.

-Topher


Bossi wrote:
Please Help!
I am leaking antifreeze from stern drive inlet, I have a closed cooling
system, antifreeze drips out through propeller shaft.

Thanks for the reply Chris, My boat has no power steering, it is
antifreeze that is leaking it has a closed cooling system.

Antifreeze leaking from stern drive closed cooling system 470 merc
 

Jim wrote:
Check your heat exchanger.
Jim
"Bossi" wrote in message
oups.com...
Please Help!
I am leaking antifreeze from stern drive inlet, I have a closed cooling
system, antifreeze drips out through propeller shaft.


Checked heat exchanger it's ok.

Antifreeze leaking from stern drive closed cooling system 470 merc
 

Check exhaust elbow and reservoir. Especially exhaust manifold gasket and
surfaces. Look for anti freeze residue.
Jim
"Bossi" wrote in message
oups.com...

Jim wrote:
Check your heat exchanger.
Jim
"Bossi" wrote in message
oups.com...
Please Help!
I am leaking antifreeze from stern drive inlet, I have a closed cooling
system, antifreeze drips out through propeller shaft.


Checked heat exchanger it's ok.

Antifreeze leaking from stern drive closed cooling system 470 merc
 

In a case like this I would pressure check the closed loop system with
a gauge. Have you pulled the spark plugs and checked for signs of
antifreeze in a cylinder?

~Chris