On Jul 4, 5:32*pm, Tim wrote:
On Jul 4, 5:31*pm, Tim wrote:





On Jul 4, 1:16*pm, AnnSnow wrote:

I winterized the boat early last fall, removed both screws that goes
behind the manifold, the two screws on each side on the block and the
inlet and outlet hoses(learned that with a marine mechanic). Have been
doing this for the last 4 years, no problem and this last winter was
mild down here in OK. Yesterday, first time I take the boat to the
lake and after a few hours in the lake, getting ready to load the boat
back home I noticed the engine beeping and almost cutting off on
idle. *Opened the engine compartment and noticed oil and water mixed
(milky combination) flowing out of the top of the carburator area.
Talking about a shocking experience here!!! Pulled the dipstick and
the mix of oil and water is all the way to the top. I am praying for a
blown gasket, but all the posts I ready point to a crack on the
engine. Also I had to get something on the engine area a few minutes
before riding back to the dock and did not see any problems or oi
+water overflowing. So it seems like it happened on the way back to
the dock. But it could be running like that since we got to the lake.
I am not a mechanic, but I would think if I got the water out of the
block, manifolds and pump hoses, at least if it is a cracked engine,
it should not be in the block. What do you think. I saw a lot of water
come out of that engine. Where else would water be hidding enough to
crack the engine ? Or could it be something else ? *I would appreciate
if you can share your thoughts. Thanks in advance.

3.0's are easy to winterize, there's not much to it. But still. I'm
wondeing in the engine has an internal crack in a cylinder wall.
You're is probably a raw water cooling system so no exhaust gas to
build in the heat exchange, so I'm thinking that some where there is
either a crak in the block or the head. I believe I'd take the head to
a quality machine shop and have it magnifluxed to see if there is any
internal damage, and if so, see if it can be re welded. Also you
should be able to tell in the gasket gave out as well.

*while you have the head off, you'll be able to tell if there has been
water damage to a cylinder. But it sounds to me that you've got
something really major going down on you.

Can you think of the engine over heating at one point? And if it has.
it's possible that the main water pump is defective thus over heating
the engine regardless if the lower end impeller is working or not.

also, I've seen people run the alternator belt too loose causeing the
water punp to slip and not provide sufficient cooling. *alot of
problems to look for.

good luck.

OOPS! I'm sorry, but you mentioned 4.3 instead of 3.0.

Now I am thinking that you may have an internal crack in the block.- Hide quoted text -

- Show quoted text -

That sucks!!! But I did remove all the darn plugs and water pump
hoses, including the two ones in the block, saw the water run out on
both sides. Anyway, instead of speculating, I will ask what would be
the next steps to find out where the problem might be. Remove the
manifolds first to check them out ? Could the problem be there ? Any
idea of the cost of rebuilding this engine in a marine shop? I could
probably try to do it myself, but don't have the time.