Help

[bradley m]

I just put my boat in and a milky brown oil is all over my motor and on my dip stick, is it a blown head gasket?

 

[Limited-Time]

Re: Help

Sounds more like a cracked block.

 

[TilliamWe]

Re: Help

I just put my boat in and a milky brown oil is all over my motor and on my dip stick, is it a blown head gasket?

Probably not. And don't assume the block either. The most common reason for there to be water in a marine engine is failed exhaust manifolds. True, they usually don't fill up the crankcase, but it's the first thing to check.
You do say that you just put the boat in, so I'll assume it's the first time you have used it since winter. That would point towards a cracked block, due to improper (or failure to do) winterization.
Care to share any more info with us?

 

[P 0 P E Y E]

Re: Help

I have seen boats sink on land when the drain plugs have been left in or someone washed the boat too long.

I have seen a 318 Chrysler take water in through a open window in a House boat and cause the two lowest pistons to seize.

The only fact you know is your oil is turning into a chocolate milkshake.

Now you need to find out why by testing other items to narrow down the possibilities. If you have fresh water cooing pressure test the freshwater system in its entirety.

Do some thinking and get a grip on how the water is supposed to flow thru the engine, then test

I have seen a perfectly good engine thrown away because of a cracked exhaust riser and a confused professional mechanic.

If an exhaust manifold is leaking, it will show up on a spark plug.

There is no right answer to fault finding other than the Cat in the hat approach of Calculatus-eliminate-us.

To find the leak you must first find out where the leak is not