Black Oily Stuff

[Bobf]

Hi All

My Series 3 Li RT195 has recently been rebuild. The engine starts and runs Ok but I have noticed back stuff dripping from the exhaust pipe. It is thin watery liquid. Not too sure but could be a petrol mixture.

Any ideas? I do know that the petrol oil ratio was extremely high when received as the builder deliberately increased the oil content during the rebuild.

Rob

[hullygully]

plug must be the same too?

[Bobf]

No the plug is extremely clean, in fact looks brand-new! I must add that I have not run the engine up to temperature yet as was concerned about the Black Stuff.

[coaster]

drop the oil ration to 3% and take it on some long runs, the black stuff will be unburn 2 stroke oil.

[Bobf]

Thanks for the advice. Will do as you suggest.

Will feedback.

Rob

[Storkfoot]

…. I have noticed black stuff dripping from the exhaust pipe. It is thin watery liquid. Not too sure but could be a petrol mixture

Just to clarify. Is the black stuff dripping from the tailpipe of the exhaust, or is it coming from, say, the exhaust manifold?

[Bobf]

Yes from the tailpipe end

Rob

[Storkfoot]

In which case, as Coaster says, go for a long run and get the engine hot