I had a blower and trimmer crap out yesterday. The blower was working fine, then there was a couple 'pffft' sounds (like popping) then it quit. Then the trimmer was having a heck of a time starting, and when it would, quit a few seconds later. Looks like someone touched the gas can nozzle with sandy gloves. They are both Stihl products. Is there a way to purge them clean, or a better way? Thanks.