HI,
This is a general question on two strokes a mate called me awhile ago and asked why the air cleaner would be oily on his echo wiper snipper, I made up a couple of suggestions but nothing to convincing. Generally he felt it was not running as well or not as powerful as it used to be.

Then I discovered a similar problem with my Stihl chainsaw and I have the same symptoms ( possibly imaginary but it does not seem to be running like it used to) but the air cleaner is definitely attracting oil.

I am guessing that fuel is blowing back onto the air cleaner element some how either rings or valves or both. Is there an easy explanation?

Last edited by Byomarimba; 21/10/18 10:58 PM.
If I can get a large enough hammer it will run for awhile just trying to get away from me