Oily water from exhaust manifold

[leakytarp]

Hi all, the other day I pulled the exhaust manifold jiffy hose on my mercruiser 3.0 (2006 Tahoe Q4) and the water that came out was black and oily.
Is it normal for there to be oil in it and if not, what could the problem be?

(Some additional info: that same day we were out on the water on got stuck in the sand with the prop, so it surely pulled some dirt through the system. Other than that everything ran fine except that at the end of the day I noticed the block drain hose had come off and water was pouring into the bilge. The bilge pump took care of that so no problem. I decided to get new jiffy hoses or plugs to avoid this from happening again for both the manifold plug and engine block plug, that's the reason why I drained the exhaust manifold in the first place.)
Any ideas? Thanks

 

[Bondo]

Ayuh,.... Welcome Aboard,..... What the 'ell is a Jiffy hose,..??

Considerin' what ya went through earlier in the day, I donno's ya got a problem,....

Normally the water, 'n exhaust steam mixes after the manifold, but some "Stuff" goes both ways at times,...

 

[Bt Doctur]

I think he means the 2 blue hoses used for draining the block and manifold. there on quick connects

 

[Bondo]

I think he means the 2 blue hoses used for draining the block and manifold. there on quick connects

Ohhh,... One of the factory installed gaurrenteed frozen busted block, Maybe it'll drain systems,..??..??....

 

[leakytarp]

Ayuh,.... Welcome Aboard,..... What the 'ell is a Jiffy hose,..??

Considerin' what ya went through earlier in the day, I donno's ya got a problem,....

Normally the water, 'n exhaust steam mixes after the manifold, but some "Stuff" goes both ways at times,...

Yes the quick connect draining hoses for the block and manifold (it has "jiffy hose" printed on it, whatever that means). So you figure it's normal having oily water come out when draining the manifold? Just wanted to make sure it's not a bad gasket or anything.
I will probably replace the quick connect hoses with proper plugs at some point.

 

[TyeeMan]

I've never had any kind of oily water come out of my manifolds when I drained them. Not on my 3.0L, 4.3L or my 5.7L. That said I suppose a little shmoo could be in there.
Check your oil, see if the oil level is over full and most importantly see if the oil looks like chocolate milk. Just thinking of the possibility of cracked block or bad head gasket and your getting oil into your water jacket or water into the oil.

 

[leakytarp]

I've never had any kind of oily water come out of my manifolds when I drained them. Not on my 3.0L, 4.3L or my 5.7L. That said I suppose a little shmoo could be in there.
Check your oil, see if the oil level is over full and most importantly see if the oil looks like chocolate milk. Just thinking of the possibility of cracked block or bad head gasket and your getting oil into your water jacket or water into the oil.

Oil looked fine, as far as I could tell from the dipstick and draining about half a cup. I am thinking maybe the reason could be bad gas - I forgot to add fuel stabilizer throughout the winter. I topped it off with fresh gas and it ran fine but maybe that's the reason.

 

[R055]

Oil looked fine, as far as I could tell from the dipstick and draining about half a cup. I am thinking maybe the reason could be bad gas - I forgot to add fuel stabilizer throughout the winter. I topped it off with fresh gas and it ran fine but maybe that's the reason.

Gas doesn't go bad from sitting 1 winter without stabil. It's not the gas.