Super Jet Thick Oil Pouring From Rear Exhaust

[Dvorel]

Recently bought a sn superjet with a 61x set up with dual carbs. Ran it for a day, but had trouble tuning it so I swapped it back over to the stock single carb. The only other mods are a protec pipe and shaved stock head.

Once I swapped back over to the single carb, I got it running and what looked like a few ounces of oily sludge shot/leaked out of the exhaust. Any ideas on what could have caused this?

 

[Mike W]

Probably a lot of oil built up when you were trying to tune it. Once you got it running right the residual oil made its way through the exhaust. I run mine on the rich side and always have black sludge coming out of my exhaust. Nothing to worry about.

 

[bird]

Dual carbs can cause your ski to run on one cylinder if the needle and seat is stuck open dumping fuel into one of the cylinders. I had this happen with my SXR, ran like crap spewing oil out the back.

I got the dish soap out and scrubbed my driveway down after that ecological apocalypse.

 

[Dvorel]

Thank you for the replies. Sounds like a normal thing so Im relieved.

 

[glennbbautomachine]

Dual carbs can cause your ski to run on one cylinder if the needle and seat is stuck open dumping fuel into one of the cylinders. I had this happen with my SXR, ran like crap spewing oil out the back.

I got the dish soap out and scrubbed my driveway down after that ecological apocalypse.

Same thing happened to me when mine was running on one cylinder

 

[Green Guy]

The brand of oil and mix can also have an effect on it. Below 50 to 1 my SXR does that too.

 

[restosud]

spoooooooge!
most of my boats spooge like mad.