Water coming in

[River's Revenge]

So I posted this i think on the wrong page. Sorry moderators. But i think i'll get better input here..

So I splashed the boat.(1978 cvx16ss 140 4cly inline GM) and had water coming in from the rear. As we tried to figure out where the water was coming in we had no luck.

Anyways, I did a better inspection at home paying closer attention to the bellows and shift boots ect. These had all been replaced. So by turning the wheel left and right i could get a pretty good look. They all looked good.

No signs of leaking when i put the water hose in the bilge. But, as the water level increased. I found water coming out of... Stay with me. just above the hydraulic lines to the trim tilt system there are two holes one on the left and one on the right. (Port and stbd sorry) these holes are the diameter of your finger and are at the lower section of what i believe is the gimble housing. they go in about an inch or two and head forward. (to where?)

So anyways waters coming out there. so I shut off the water and watch the current flow from the bilge and it is heading aft from inside out.

Once again, I'm stumped. what are these holes for. Are they part of the cooling system. ??? I guess my real question is how do i seal this? is the a seal in there?

Please any help would be great to understand the boat through hull.

Thanks and enjoy the weekend

 

[Fishermark]

Re: Water coming in

Those are your exhaust relief ports. (I think that's what they are called). If you have water coming out from there without the engine running, then I would suspect either your exhaust pipe or the connection where the pipe connects to the transom asembly.

 

[Bifflefan]

Re: Water coming in

Yep it motor pullin time.
where the exhaust bolts to the gimble houseing is leaking.
Check out the link in my signature and you will see what happens when this is not taken care of in a timely fashion.

 

[Don S]

Re: Water coming in

I guess the first question should be what are we working on? What type of drive. Mercruiser or OMC?

 

[River's Revenge]

Re: Water coming in

Thanks for the Quick reply everyone. I did have the motor out and reinstalled recently. Now lets see if they Honor thier work.

No way to get your hands in back there, that area is tight. I'll get an inspection mirror and a flashlight from inside but I think you're right. "It's Motor pullin time"

Thanks again

 

[Don S]

Re: Water coming in

Still don't know what you're working on. Most leaks can be fixed without pulling the engine. Not sure why anyone would say you need to pull the engine without even knowing what you have.

 

[River's Revenge]

Re: Water coming in

Hey Don,

She is a 1978 CVX16SS Glastron Carlson. Has a 140 merc cruiser in the back with a 4clyinder inline GM engine. No power steering, single sol tilt trim. The lower unit is a MC1 with the lift eye at the top.

So you think there is a possiblity of not pulling the engine? do tell...

Oh and does anyone have a picture of the breakdown of this area. Is this "exhaust relief port" a tube? a boot? or is it a one way water check valve?

Oh and one more comment. I read in the posts awhile back. Someone wondered why they put such a small bilge pump in these boats. Well I'm sure glad I just installed a bigger more reliable one about a week and a half ago. Cuz when i kicked on the pumper she did just fine.

Thanks don!

 

[River's Revenge]

Re: Water coming in

Ok so I think i understand what's happening. The lower exhaust pipe has a seal(O-ring) that has failed. or got pinched. as the weight of the water is applied to this area, water is allowed into the chamber. it is suppose to just sit there fat dumb and happy because it cannot go any higher than the water line. But because it has failed, it now overcomes the seal area and flows into the bilge.

Or there is a crack, a clamp is loose or something in that order. I chose the seal because it is the most probable.

I am sure glad i didn't start the bugger when all the water was in.

Now I need to verify.

Anyone wanna tell me that I don't need to remove the engine. I sure would like to NOT do that but it sure looks like i have to. unless i have little hands and can get the elbow off. Yeah right!

 

[Fishermark]

Re: Water coming in

Yep - you have to pull the engine to remove the exhaust pipe. It may or may not be the o ring... but either way, you need to pull the engine to remove the pipe and check.

 

[River's Revenge]

Re: Water coming in

It's funny what $1.40 worth of 2 plugs and some JB weld can do. Word to the wise. A 140 4 cly inline can use some V8 parts.... but ya may have ta plugs some holes that are just not needed.

Happy Boating everyone.

 

[cr2k]

Re: Water coming in

I have also seen the flapper pin fall down and wear a hole in the bottom of the pipe.

Since the engine was out, wondering if the pipe got tightened back down.
See if you can wiggle it any.

 

[River's Revenge]

Re: Water coming in

Did the wiggle test. she's solid. But good catch on the flapper.

 

[Fishermark]

Re: Water coming in

It's funny what $1.40 worth of 2 plugs and some JB weld can do. Word to the wise. A 140 4 cly inline can use some V8 parts.... but ya may have ta plugs some holes that are just not needed.

So what was the source of the leak? And what plugs are you talking about? What did it end up being?

 

[River's Revenge]

Re: Water coming in

There is an exhaust port difference between the 4 cly and the (Used Parts) V8 plate in the back. 2 holes the diameter of your finger went right out to water if you are a V8 with no exhaust adapter installed. (cuz ya don't need em on a 4 cly.) anyways a little JB weld and some plugs covered those holes. I believe this is part of the Gimble Housing. Anyways. my system didn't use them so they got plugged. If this knowledge would have been understood before assembly then they either would have been plugged then or a proper housing would have been used.

I don't think I'll have any problems with cooling.