MerCruiser 5.7 ski hydro locked

Yourt16

Cadet
Joined
May 10, 2017
Messages
12
So I was out on the water today and shut the boat off and it dieseld on me. I cruised it back to the dock and while I was driving noticed it was getting hot so I shut it off and pulled it back in. I went to re start it and it was hydro locked. Pulled it out of the water and noticed it was missing an exhaust flapper do you think the flapper caused it to suck in water into the motor?
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,465
and it dieseld on me.

Ayuh,..... Donno why it overheated or dieseled, but the hydro-lock is because it dieseled,.....

the motor turns backwards when that happens,....
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
40,581
Dieseling is bad and a missing flapper would allow water to come rushing up the exhaust when boat stops
 
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