1986 Merc 9.9 leaking oil

[ABangler]

Just noticed that my 1986 Merc 9.9 is showing signs of oil- white frothy residue dripping down lower leg appears to be from exhaust port.<br />What could it be? blown gasket on water jacket?<br />I had just repalced lower leg oil day before I noticed this, but there appears to be older residual residue build up on leg so don't know if this a brand neww issue or not. No real other signs of trouble - except that last time I ran carb dry before removing I MAY have heard a bit of a knock, but I wasn't really paying attention.<br /><br />Any thoughts would be appreciated.

 

[Solittle]

Re: 1986 Merc 9.9 leaking oil

While you may have a problem consider this - All 2 cycles will pass unburned oil through the exhaust system. When oil and water get together you get a white residue. So you may not have a problem at all. How does it run? Does it get hot?

 

[ABangler]

Re: 1986 Merc 9.9 leaking oil

It didn't seem hot when I lugged it from boat to car, and it was running fine - guess I'll have to go out again a try it on a short trip and really keep eyes and eaqrs open for things out of the ordinary.<br />Thanks

 

[ABangler]

Re: 1986 Merc 9.9 leaking oil

Was out again yesterday.<br />Even more oily frothy stuff coming from both outlet holes in upper section of lower leg.<br />I thought it may have been a bit warm at one point while trolling, upped the speed a bit and it cooled off. Water coming out slightly warm.<br />Runs fine at troll and full speed.<br /><br />I just reaized that I may have mixed the last batch of fuel a bit rich probably about 35 or 40:1 instead of 50:1. Perhaps this acounts for the extra oil?