NEED HELP FAST is this a rear seal leaking?

[CedarRiverTrapper]

I have a 1989 40hp evinrude that I noticed leaking watery oil out around the prop so I took the prop off and can see that the oil is running down way in the back at the top. I dont know where the seals are in a marine motor and havent seen inside this one so does this mean that its a main seal for the prop thats leaking the water in or could it be coming from somewhere elese? I have changed seals in many other things but never a marine motor, is this something I would need special marine tools to do or would your ussual auto shop tools work? or would this be something I should just let a marine shop do? I was hoping to take this boat out duck hunting this weekend so it would be great if I could get this problem fixed by the weekend even though I know its a very short time. Any advise or tips would be greatly appreciated. Thanks

 

[bktheking]

Re: NEED HELP FAST is this a rear seal leaking?

Smell the oil, does it smell like gear oil? If not it could be just unburnt oil mix with water, not uncommon.

 

[CedarRiverTrapper]

Re: NEED HELP FAST is this a rear seal leaking?

The oil that came out was brown and looked like watery motor oil it didnt look green at all like lower unit oil and the oil/gas was mixed pretty thick. I dumped the lower unit oil and it definately had water, Im guessing this is probably a totally different problem than the oil coming out the exhaust?

 

[boobie]

Re: NEED HELP FAST is this a rear seal leaking?

The best thing to do is take it into a shop and let them pressure and vacuum check it. That way there's no guess work as to where it's leaking. You could also have some fill/vent plug screw gaskets bad.