I'm wondering if anyone has an answer for this. I was cleaning up my Rubi and decided to clean the filter, after opening the cover I found it alot dirtier than expected so I brought it down to a garage and asked the guy to clean it out for me, which he did and seemed fine. I put it back in after it dried and now it pops a little bit and has a slight sputter, also it will die if left sitting at idle. All of these things never happened before this and I didn't do anything else to it. I raised the idle a little to keep it running but want to see if anyone has an idea. I also just oilled the filter slightly to see if that helps but it started to rain to I put it back together and covered it up. I'm not sure where to begin, carb, plug? Could there be water in the filter that I cant see or feel and its gotten into the carb? I ran it with the filter off but didnt seem to help.