Uncategorized Grizzly 700 not running help! May 20, 2016 dstech At first it was just having problems idling. It progressively got worse, extremely bad backfiring. Will not run for more than five seconds if it runs at all. I have checked timing, valves, fuel, injector, gas . Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related