Exhaust oil in pump

[Whaase]

I've been working on this Evinrude 9.9 I got for free. I dropped the leg on it and found this:

Why is there oil and exhaust chunks/gunk in with the water pump? It's a mess lol. Should I power wash it out on the lower and upper legs? What do I need to do to stop this from happening?

Thanks
Walter

 

[Daviet]

Re: Exhaust oil in pump

It looks like unburnt fuel mixture, maybe someone was running a rich oil mixture. You will never stop it, that's what 2 strokes do, they never completely burn the gas/oil mixture. Clean it if you want, but next time you pull the lower unit it will be right back.

 

[Whaase]

Re: Exhaust oil in pump

Ah ok. I didn't realize it was normal. Ill clean it up a bit. Makes working on the water pump a greasy mess lol

Thanks

 

[boobie]

Re: Exhaust oil in pump

After you get it all back together, make sure the mtr temp is coming up to specs at idle and wot.