Water in Engine

[Deadpool]

(Still a new boat owner) So I took the 1999 Bayliner Capri out for a test run after dewinterizing it...(btw it ran fine the year prior and located in the southeast)...was on the water for a good 15 minutes waiting on my wife to park the trailer with no issues. I picked her up and was cruising out past the no wake zone and I looked over at the engine to see a chocolate milk substance coming out of the top of the two hoses that lead to the carburetor...of course I docked and loaded it up to the trailer. So after some research, I believe that I might need to redo the head gaskets...and of note, I know I need a new thermostat from troubleshooting. There is water in the oil chamber where you fill it and where the dip stick is. And there was nothing abnormal from the drain plugs. Looking for some guidance before doing a lot of work...

Again the milky substance was coming up and out towards the carburetor and not out of the carburetor.

My thinking is change the head gaskets...observe while it's open...and change the oil...and I'm putting a new thermostat in.

 

[Bondo]

Ayuh,..... Welcome Aboard,.... Sure sounds like a cracked block from improper winterization,.....

 

[Rick Stephens]

Sorry to say it is unlikely a headgasket. First step is to block off the water lines to the manifolds and pressurize the cooling system at the water 'in' port on the thermostat housing. Find out where you are pumping water. Unfortunately, that much water is probably a cracked block.

 

[Deadpool]

Ayuh,..... Welcome Aboard,.... Sure sounds like a cracked block from improper winterization,.....

Well I know the winterizing went well, as I probably did more than what was required as we had zero snow. But I did get the boat as a project boat and it is definitely possible that there issues prior that didn't show up until now. But thank you...as I was also worried about a cracked block. Guess I will get out the welding gear.

 

[Deadpool]

Sorry to say it is unlikely a headgasket. First step is to block off the water lines to the manifolds and pressurize the cooling system at the water 'in' port on the thermostat housing. Find out where you are pumping water. Unfortunately, that much water is probably a cracked block.

That's a solid plan...I also was leaning towards the block being cracked but was hopeful. The thermostat hosing has been pulled at the moment. I will let you know in a couple of weeks what I find out.

 

[Bt Doctur]

If you sucked the AF in from the muff method without draining everything first you have a cracked block

 

[PC on the Bayou]

Sorry to say it is unlikely a headgasket. First step is to block off the water lines to the manifolds and pressurize the cooling system at the water 'in' port on the thermostat housing. Find out where you are pumping water. Unfortunately, that much water is probably a cracked block.

Not trying to hijack this thread, but while I was working on my boat with the engine out I ran into a freezing problem this winter. I never even thought that any water would still be in the engine after I removed it . . . boat fail. Anyway, I know that I have a cracked exhaust manifold and would like to do a quick check of the engine block for internal cracks and this sounds like a potential easy check.

So, if I clamp off the hoses to the exhaust manifolds and put pressure on the water jacket through the inlet port, would it be logical that the water jacket would hold air pressure for a check? How much air pressure would be advisable (maybe 15 psi)?

 

[Rick Stephens]

Not trying to hijack this thread, but while I was working on my boat with the engine out I ran into a freezing problem this winter. I never even thought that any water would still be in the engine after I removed it . . . boat fail. Anyway, I know that I have a cracked exhaust manifold and would like to do a quick check of the engine block for internal cracks and this sounds like a potential easy check.

So, if I clamp off the hoses to the exhaust manifolds and put pressure on the water jacket through the inlet port, would it be logical that the water jacket would hold air pressure for a check? How much air pressure would be advisable (maybe 15 psi)?

That is a correct method. 15 psi is a good target.