81 mercruiser slow crank water in the cylinder?

E

everhart57

Cadet
Joined
Aug 25, 2010
Messages
29
ok...it's an 81 seawirl... I pulled the plugs and there seemed to be water in a cylinder... I'm thinking head gasket?... I don't know... it still cranks slow even with the plugs pulled and the starter wire positive is still getting hot... is it becaue I am using my truck battery right now? my marine battery was destroyed by this boat... its a mercruiser 898
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 81 mercruiser slow crank water in the cylinder?

The engines cylinders are probably all rusty and binding, or the starter is shot, or the cable are junk, or ..............

Pull the outdrive off, and with the spark plugs out, you should be able to easily turn the engine by hand, can you? With water in the cylinders, I would suspect the manifold to riser connection first, long before a head gasket.
 
You must log in or register to reply here.
Top