Gas leak after running the boat

[pog mo thon]

Hello fellow boaters,

Here are the pictures of oil spillage that happens every time I take the boat out and bring it to a stop. It only last for a couple of minute after I shut the boat off.
I checked the blige and there is no trace of oil or gas at anytime.
There is also no trace of oil in the water when I come back to her slip on the weekend.
It has been like this since I got the boat in 2008.

What could it be? Could it be coming thru the exhaust?

 

[Summer Fun II]

Pics are not showing for me.... Do you see them ??

 

[pog mo thon]

photo-2.JPGphoto-3.JPG

I apologize i guess you can't copy and paste with the ipad!
Now you should be able to click on the two links above.

 

[Lazy Daze]

I can't see anything in the pictures, but I'll trust that what you are trying to show is the "rainbow effect"? It's not just happening when you come to a stop - it's happening whenever the engine is running. You just don't see it, for obvious reasons, when the boat is moving. It's a natural process of combustion - minute particles that are not burned make their way out through the exhaust. You would see less of this if you had catalytic converters.

 

[Bucit]

I had this issues when I bought my boat and it was a leak in the top cap of the Bennett Trim Tab ram.

 

[Gunn]

I had this issues when I bought my boat and it was a leak in the top cap of the Bennett Trim Tab ram.

I would narrow in on this being the culprit too. And *if* you had sterndrives, I'd also suggest the trim cylinders having a leak somewhere.

Is it always on one side of the boat or the other?

 

[tommyc_37]

I also cannot see the pics, but I feel like I have seen a small slick near my boat at times, so I am also curious.

 

[Bucit]

Have someone stand back looking at the trim tabs and activate them in the down position which will put them under pressure. This was the only way I found my leak. I contacted BTT and they sent me the parts for free and were a lot of help.

 

[skolbe]

Could you be having fuel cooling issues? Maybe the boat is running too rich? There are a few threads on cool fuel issues.

 

[pog mo thon]

Thank you very much for your help.

i will try to work the trim tabs at the dock and see if that could be it.
I have noticed the port side tab wont bring the bow as high as the starboard side, I believe a leak could explain that.

 

[Bucit]

Thank you very much for your help.

i will try to work the trim tabs at the dock and see if that could be it.
I have noticed the port side tab wont bring the bow as high as the starboard side, I believe a leak could explain that.

Between that and the sheen on the water is what made me look at the trimtabs. Hope it helps!