'83 115 evinrude oil leak

kybarb333 · #1 July 3rd, 2009, 12:07 PM

Oil is dripping from the crack between the upper part of the prop and the lower. not sure of technical names i'm new to all this.

jonesg · #2 July 3rd, 2009, 04:34 PM

Quote:

Originally Posted by kybarb333

Oil is dripping from the crack between the upper part of the prop and the lower. not sure of technical names i'm new to all this.

upper part of the prop and lower ?!

is something cracked or do you mean a seam, a joint that is supposed to be there.?

what does the oil look like, does it smell like sulphur ? what color is it?

give as many facts as possible, photos are good too if you don't know the terms.

more info pleese.

ezeke · #3 July 3rd, 2009, 04:53 PM

Excess engine lubricating oil from incomplete combustion passes out of the engine with the exhaust on your motor, most of which passes through the propeller. It is normal to have some of that dark oil at the propeller after standing as the engine is self draining.

If the motor has been run on muffs, or only at low speed, the amount ofthe oil draining will increase.

kybarb333 · #4 July 5th, 2009, 10:50 PM

It's from the seam between upper and lower. It's black and I haven't noticed a smell. Should I be worried.

ezeke · #5 July 6th, 2009, 12:02 AM

No, that's from the exhaust. There is a rubber seal between the inner exhaust and the gearcase that may need to be repaired,

kybarb333 · #6 July 6th, 2009, 02:40 PM

ok I will try that too. Hopefully that's it.

kybarb333 · #7 July 13th, 2009, 12:52 AM

what should my oil mixture be? I think I'm running too rich right now.

ezeke · #8 July 13th, 2009, 01:33 AM

50:1

Use TC-W3 synthetic or synthetic blend and it will run cleaner if the thermostats are working properly.

emdsapmgr · #9 July 13th, 2009, 06:27 AM

If it is thick, black and oily, it is residual fluid from the exhaust tube and could well be the rubber seal in the bottom of the lower exhaust tube that ezeke refers to. If that seal is leaking, exhaust is escaping onto the top of the lower, and could affect the plastic water pump housing.

kybarb333 · #10 July 13th, 2009, 02:17 PM

how would one go about replacing that seal that you speak of?

emdsapmgr · #11 July 14th, 2009, 07:32 AM

You need to drop the lower unit and inspect the rubber seal that mounts between the lower unit and the bottom of the lower exhaust tube.

kybarb333 · #12 July 16th, 2009, 12:07 PM

Is that something a beginner could do or should I find a mechanic?

emdsapmgr · #13 July 16th, 2009, 08:38 PM

The only hard part about dropping the lower unit is getting the shift rod detached under the lower carb. Have you got a factory service manual for that specific engine?