Oil sweat mystery

the Hotrod M944 will "sweat" oil too. no idea where it comes from. i clean the motor up good about every other week and afer a few rides it's back. as you mentioned it does not drip it just kinda coats the lower portion of the motor in a light slime. anyone have an answer for this?

It's a duc and I don't mean the quacking type...although they seem to be covered in a slight oily film, repels water.

Re: (mikeinwi.)

My 95 916 did it too......it will get worse. My pre ride ritual consisted of a shot of brake clean on the underside of the cases and the oil that had dripped onto the exhaust. It will get to the point of leaving a drop on the floor where it fell off the exhaust. Center case gasket is the problem.....the new bikes have Three Bond on the centers and don't leak.

Re: (Phil 998)

Phil, interesting. Do you remember how long your situation took to degrade to a point you had to deal with it? We are looking to do his 24K service this wkend rather than send it to a shop for the service (and investigation into this oil issue) and I'm not sure either of us is inclined to split the case which I've no experience with. What does that entail?

Thx.

Re: Oil sweat mystery (Ducshop)

I'd go with Hansen's advice and put in a new washer. Mine was missing the washer when it had similar symptoms.

Re: Oil sweat mystery (ccolwell)

I have seen this on a Monster S4 and on my Paso. I reworked the Paso engine this winter and it turns out that the source of the leak was the swingarm pivot seal on the sprocket side. Once replaced, leak over.

Something to look at.

Re: Oil sweat mystery (jcs182)

I had the same problem last summer. It was on the right side of the engine, and my mechanic came down to one of two locations for the leak: the seal that goes around the belt drive output shaft or one of the little O-rings that is at the base of the vertical cylinder. I needed new belts anyways, so I went for the belt drive seal because I didn't want to pay the labor for dropping the motor and replacing the o-ring. It was a good thing too because the problem was with the seal. Over time those little seals will harden and crack and start to weep a little oil.

Re: Oil sweat mystery (blueSS)

I have the same kinda thing w/ my 900ss. leaves a drop after sitting somewhere for a few days. Havn't traced it yet, I'll work on it now that it's back in the garage, and not the basement, and I can run it for a while.