so above freezing your fine?? try draining the bottom of the tank out, see if any water comes out, there should be a petcock on the bottom. the quality of your fuel is very important, wherever you get your fuel from should already have anti-gel, but some stations that dont sell alot of fuel will still have "summer" fuel. in mine, when i first got it, i had the same prob, i had changed the fuel filter and while at the dealer, i bought some fuel additive, JD, product. i dumped the whole bottle in and with a battery charger/starter, it finally started. thought i was gonna need a new starter after that but it did start. block heater for around an hour and if your fuel is suspect, additive/antigel from now on. have your hand throttle in the middle position while trying to start, if it does "catch" let the injector pump do its big pull through the supply line. drain your tank!!!