water in engine oil

[rinkman]

I am new to this forum and did try to search for a solution. I just pulled my 1989 Rinker out of the garage to start for the first time this season. I have wintererized the boat for the past 5 years myself. I checked the oil before attempting to start and I saw what looked like some condensation on the dipstick. Attached the muffs to the outdrive, turned on the water and started her up. It ran smoothly for about 3 minutes and then started spewing foamy stuff. I immediately turned it off. Checked the oil and there was all sorts of water in the crankcase. My question is: how do I clean this mess up. I am sure that all of the water was drained in the fall and also the lower gear lube was changed. Any help would be appreciated. This boat has been stored in a garage all of its life and treated like a baby.

 

[Haut Medoc]

Re: water in engine oil

Welcome to iboats........
Sure sounds like a cracked manifold/riser or block to me.....
What kind of engine is it?.....
It started spewing foamy stuff out of where?​

 

[Don S]

Re: water in engine oil

It's a cracked block. No way will a bad manifold or riser fill up the engine oil with it running. The exhaust would push the water out.
Obviously there was water in the engine block. Did you drain the block during winterization? Or did you try to run antifreeze thru the engine with it running?

 

[Bondo]

Re: water in engine oil

I am sure that all of the water was drained in the fall

Ayuh,...........

You might be Sure,....... But I Know, You Missed Something, Somewhere......

You've got a Cracked Block,......
Not much sense in Cleaning it Up,.....
It's going to need to be Torn Down,...... You can do your Cleaning then.....

What Motor,+ Drive are We talking about,..??..??

 

[tystick]

Re: water in engine oil

It's a cracked block. No way will a bad manifold or riser fill up the engine oil with it running. The exhaust would push the water out.
Obviously there was water in the engine block. Did you drain the block during winterization? Or did you try to run antifreeze thru the engine with it running?

draining the block or running antifreeze thru engine ... which one is better...assuming that you support one method?
both methods have been sworn by forum members.

 

[Don S]

Re: water in engine oil

With a raw water cooled engine, you drain the engine first. Then run antifreeze thru if you find the need. But air don't freeze and break things.

 

[b0mbtrack]

Re: water in engine oil

i usually run the anti-freeze through to keep down rust and corrosion

 

[Coors]

Re: water in engine oil

drain it, hook a compressor to it from the top, blow it out, pour anti-freeze down from the top. put it in a heated garage, put a light in the opened doghouse, and put a heating pad on the outdrive-make sure if the power goes out that a back-up generator is wired in.
That seems to be the consensus here. lol. Just drain 2 block plugs, both manifold plugs, power steering cooler, lower the drive, pull the lower water pump hose and drain.

 

[rinkman]

Re: water in engine oil

Ok. The Rinker has a 4.3 Mercruiser. And yes, I did drain the water out of the block. I have for the past 2 years been putting anti-freeze in from the top. Any chance that I spilled some down the wrong place? I usually take the thermostat out and pour it down in. I have been doing this to prevent rust.
After running for 3 minutes the foaming oily mixture started coming out of the flame arrester. If it is a cracked block, it must have been crappy anti-freeze.

 

[seven up]

Re: water in engine oil

The intake manifold is a definite possibility. From experience. Get to it fast.

 

[Bondo]

Re: water in engine oil

Well,.........

What I would do at This point is;

Drain All the Water from the Block,........
Plug or Cap Off the Cooling System,+ Pressurize it with Air........
You'll be able to Hear, Where it's Leaking.........

You Might be Lucky,+ it's Only the bottom of the Intake Manifold,.....
Or,..... Unlucky,+ it's the Block that's Cracked in the Lifter Valley.......

 

[Don S]

Re: water in engine oil

I checked the oil before attempting to start and I saw what looked like some condensation on the dipstick. Attached the muffs to the outdrive, turned on the water and started her up. It ran smoothly for about 3 minutes and then started spewing foamy stuff. I immediately turned it off.

If you had spilled the antifreeze into the engine oil during winterization, the oil level would have been way over full when you first checked it, not just showing some condensation.
You say it only had some condensation, then within 3 minutes it was spewing out the engine............... Sorry, something didn't get drained properly.
Did you use a wire and make sure the holes were clear when you drained the block?

 

[seven up]

Re: water in engine oil

Get the water/oil mixture out of the engine. The slop was more than likely coming out of your valve cover crankcase vent hose. It's full. Finding the leak is secondary to flushing out the oil/water mixture. And good luck.

 

[Coors]

Re: water in engine oil

putting anti-freeze in t/stat and getting it out the carb_cracked or gasket

 

[Manipulator]

Re: water in engine oil

This maybe far fetched but here could be the cause. My dad was having a similar problem, we checked everything and found nothing. Then we found that his engine had an oil cooler attached and burried at the back of the engine. Turns out there is a little drain plug on this cooler to drain the water out of it for winter. The oil flows inside this tube that is cooled by the engine cooling system. Internally he had a crack and water was getting into the oil and into the crank case through the cooler. Turns out he also has a power steering oil cooler as well but that was fine. Could be a possiblilty if you have an oil cooler.

 

[Don S]

Re: water in engine oil

Oil pressure is about 35 to 60 psi. water pressure would be less than 10. One would think the oil would leave the engine into the water instead of the water going into the oil............

 

[Manipulator]

Re: water in engine oil

Yeah thats a good point, not sure why or how. We replaced it, changed oil and ran it all day and no more water in the oil.

 

[Bondo]

Re: water in engine oil

Ayuh,........... Stranger Things Happen........

I've stumbled across a Monkeyed Up Cooler that was plumbed from an Oil Port to the Cooler,....
Then Gravity drop directly into the Oil Pan,.......
A 1/2" line won't put up Too much Resistance...........

Virtually No Oil Pressure in That 1........