It's been making some weird noise lately, like the sound a bike makes when it's about to stall, that clunking sound, but all the time. So anyway, I left it running outside for 5 mins to get my bag and I come out and it's bogging like crazy, no power, I finally get it going, still no power and I go 50 ft and POP POP a couple backfires and it dies! Now I push it back to my house, kick it over a few times and it will run for a few seconds and die. It was running fine up until then except for that noise. Any thoughts? I don't even know if the noise is related.