1987 70hp Johnson

[Steele329]

Please tell me this isnt something major! I ran this engine last weekend on the water, and one week later this appeared. It is more of a grease than an oil, but why am I getting this? The engine was maintained by a mechanic, and was most likely greased up prior to me purchasing it. I bought it about a month ago, and I put it on my boat last friday, then on the water on saturday. Is this something I need to look into or what? Please help!

 

[Faztbullet]

Re: 1987 70hp Johnson

Take some of it and rub it between fingers and smell, if it has a gas/fuel order you have a carb that slightly flooding and dissolving the carbon in exhaust tube(blackness). If it has a burnt gear oil smell the upper driveshaft or prop seal may be leaking, pull oil fill/drain plugs and check the gear oil for water intrusion(usually grey)....

 

[Steele329]

Re: 1987 70hp Johnson

I did smell and feel it and honestly it doesnt smell like gear oil or gas. Is smells and feels like grease. I had the oil/gas black drip on another engine so I know it isnt that. Is it possible that its just excess grease from the shaft? Or is that highly unlikely? Thanks.

 

[Steele329]

Re: 1987 70hp Johnson

It is hard to see in the pic but the color is actually grey, if this helps.

 

[boobie]

Re: 1987 70hp Johnson

Crack the bottom l/u drain plug for the oil and make sure there's no water in it. If not it's probably unburned fuel/oil.

 

[Steele329]

Re: 1987 70hp Johnson

Thanks boobie, I didnt check that yet but I did remove the prop and it doesnt look like it leaked from any seal, and like i said the consistency and smell are that of grease. If it is unburned fuel and oil is this something i need to be overly concerned with? What should my course of action be? Thanks!

 

[boobie]

Re: 1987 70hp Johnson

Take and run the heck out of it and then recheck it.

 

[Steele329]

Re: 1987 70hp Johnson

Ha ha thanks! That is actually what I wanted to hear! Truth be told I think thats what I was going to do anyway with the hopes of it not being anything of concern. If it clears up then I'll feel better, if it keeps up I'll be starting a new thread. Thanks everyone for your input happy boating!

 

[weekendfisher]

Re: 1987 70hp Johnson

My 50 does the exact same thing especially when running it on the muffs for flushing seems to be unburned fuel/oil perhaps you have to much oil in your mixture ... I had the VRO and pre mix going so i think that has alot to do with it.
when running in the water at higer speeds it there is no oil so i am guessing it is not burning all of the oil at idle speeds.
Not a big deal and nothing to worry about.
At least you know oil is passing through your motor