"Smooke on the waa-ter..." HELP!

filschop

Cadet
Joined
Jul 5, 2009
Messages
8
Hello all. I need some advice since my boat is in the water, far from the trailer now, far from my garage, manual and at the vacation rental.
It's an 86 Rienell with a mercruiser 5.7 L and Alpha one outdrive.
The events occurred as follows.

1) Boat was launched once a couple of weeks ago after oil change, winterization and new outdrive last season. ran like a top.
2) Launched on Friday and drove it 19 miles to slip at Lake- ran perfect.
3) Put a number of hours on it Saturday towing ski's, tubes etc.
4) Sunday morning I was pulling a tube, running great, I shut it off to allow for a quick swim. When I went to restart it, got a click of the starter and smoke from the battery.
5) Melted battery post I was towed to slip.
6) Too much resistance in starter and pulling high amps, I fixed post (on fully charged battery)
7) Trouble shooting I tried to manually turn motor and it was TOUGH.
8) Pulled a couple plugs, it turned over slightly and spit out water. H2O causing some high compression...

What can I do! Couple of things I should note.
I'm 19 miles away from launch, parked in a slip at a rental until Friday. Normally it is dry docked, now it's in the main part of a busy lake that was bobbing like mad in slip. Again, new outdrive and the small bellow fell out (read here it was not a huge issue). Not sure if this helps but when plugs were out I could feel and hear the motor breathing as it bobbed with the waves. As in it felt like piston compression every time it bobbed. Also noteworthy, I'm no mechanic but I've had this boat for 15 yrs and done the work on it myself (for good or bad). The boat is getting older and I am not willing to put a whole lot into it. A rebuild is out of the question and as much as it hurts, I would let her RIP instead. But I would buy risers and replace them myself if I thought that was it. Is there a way to know if it's a head gasket, or risers, or exhaust leak, or cracked block considering the above? Any help/advice would be greatly appreciated. Thanks
 

NHGuy

Captain
Joined
May 21, 2009
Messages
3,631
Re: "Smooke on the waa-ter..." HELP!

Get it out of the water and get it "pickled". Which is: pull plugs, crank til the water is out of the combustion chambers, then shoot some oil in there. Bring it home. Now start checking for what to fix.
I think it would be cheapest to get it pulled near where you are and go bring the trailer to the boat unless you are on an island. Over the water towing is too pricey unless you have one of the insurance plans. Find the cheapest way to get it on the trailer.
 

JetBote

Seaman
Joined
Jul 15, 2010
Messages
69
Re: "Smooke on the waa-ter..." HELP!

Raw water or closed loop cooling system?
Motor breathing with the bobbing of the boat is more than likely:

Water getting into cylinder through exhaust.
Cracked head or block/intake manifold, r
Reversion thru risers

Do a leak down test
 

scipper77

Commander
Joined
Sep 30, 2008
Messages
2,106
Re: "Smooke on the waa-ter..." HELP!

Are you running on last years gas by any chance. It sounds like you had some issues last year. Is it possible that you didn't even run through a full tank last year and now you are running stale gas with water from phase separation? Just a thought. Wouldn't want you to start tearing things apart when all you need is fresh gas.
 

filschop

Cadet
Joined
Jul 5, 2009
Messages
8
Re: "Smooke on the waa-ter..." HELP!

Good stuff so far guys, thanks. The cooling system is raw water, I forgot to mention that. I would love it if it were the gas, but I'm thinking I have run enough to burn it off, it ran well, and I'm very curious about the "breathing" as described. Is there any reason it should do that? Looks like a leak down test is coming... ugh
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,333
Re: "Smooke on the waa-ter..." HELP!

have you checked the water shutters?

sounds like you got water in the cylinders through the exhaust, if its really bad you will keep dumping water into one or more cylinders even just cranking the engine

most likely its a slow leak, or the shutters have failed

pull all the plugs, crank the motor over until no more water shoots out the plug holes, re-install plugs, fire the engine and drive it to where you can pull it
 

filschop

Cadet
Joined
Jul 5, 2009
Messages
8
Re: "Smooke on the waa-ter..." HELP!

Huh,..??...

With plugs out, as boat bobbs down with wake, it exhales a good amount of air and pressure through plug hole. As the it goes up with wake, it "breathes" in. It just seems to me that something is open. Like the shutters.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,090
Re: "Smooke on the waa-ter..." HELP!

With plugs out, as boat bobbs down with wake, it exhales a good amount of air and pressure through plug hole. As the it goes up with wake, it "breathes" in. It just seems to me that something is open. Like the shutters.

Huh,..??..?? What Plug,..?? The Sparkplugs,..??

Dub's has the answer anyways,...
pull all the plugs, crank the motor over until no more water shoots out the plug holes, re-install plugs, fire the engine and drive it to where you can pull it
 

bigbadbowtie

Cadet
Joined
Jul 5, 2011
Messages
14
Re: "Smooke on the waa-ter..." HELP!

I think i understand what your talking about the "breathing" out of the spark plug hole.

The reason your getting air out of the spark plug hole when the boat moves in the water is the engine is in the exhaust stroke. The exhaust valve is open on the plug you have out. As the boat moves up and down in the water, so does water in the exhaust causing air to move in/out of the combustion chamber. This is ok.


By the way... my 1st post.

Ray
 
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