1992 40 hp leaking oil near propshaft

[bigbass55]

i have a 1992 evinrude 40 hp.recently i have noticed a black goey substance dripping from the L/U. it seems to be coming from the area around the propshaft. it started the last time i went to the lake. all went well ubtil i parked the boat in the garage an noticed the oil on the floor. it wasnt much so i shrugged it off. yesterday i put the water muffs on the motor and ran it 2 ensure the motor was running properly after installing new spark plugs. today i noticed an approximatley 4 in diameter puddle of oil on the garage floor. any suggestions as 2 what i should do?

 

[bigbass55]

Re: 1992 40 hp leaking oil near propshaft

^can this be unburned oil/gas mixture? this motor is tickin me off, lol

 

[ob15]

Re: 1992 40 hp leaking oil near propshaft

It probably is. It happens more after running on muffs in the driveway.

 

[bigbass55]

Re: 1992 40 hp leaking oil near propshaft

i have ran this motor on the muffs several times and never noticed any oil dripping.

 

[Silvertip]

Re: 1992 40 hp leaking oil near propshaft

If its black and gunky looking, its coming from the exhaust. Lower unit lub would not be that dark. If it has some water in it it would have a milky or slightly beige color. Make sure the thermostat is working on that engine. It may be running too cool.

 

[bigbass55]

Re: 1992 40 hp leaking oil near propshaft

thanks upinsmoke and dave f. im hopin that it is comin from the exhaust. i had never noticed this before and it had me worried.

 

[ob15]

Re: 1992 40 hp leaking oil near propshaft

It's intermittent for me too. Sometimes it does it, sometimes it doesn't.

 

[bigbass55]

Re: 1992 40 hp leaking oil near propshaft

this is kind of off subject, but how many rpm's should i be turning at wot. the motor is on a tournament tx 17 bass tracker. im running a 11 3/4 by 17 prop at around 4900-5000 rpm. is this within the suitable range? thank you guys again

 

[ob15]

Re: 1992 40 hp leaking oil near propshaft

I would worry about that a lot more than the puddle. It's way too low. Need at least 5500. We shoot for 5800. Go to the new prop forum, read the post for first time posters and then add a post. I along with others (hopefully Kenny & Dhadley) will help you out.

 

[MCM]

Re: 1992 40 hp leaking oil near propshaft

bigbass,<br /><br />Did a prop search for your setup at this link and it recommends a 12 1/2 x 13 prop.<br /><br /> http://www.miwheel.com/MIWheel/html/products/outboard/PSearch.asp <br /><br />Mike

 

[ob15]

Re: 1992 40 hp leaking oil near propshaft

Lets get a new post going in the prop forum. He'll get tons of help there.

 

[bigbass55]

Re: 1992 40 hp leaking oil near propshaft

thanks guys