i have a wasp 28 engine.....ran great last year around 250 degree.......the other day i fueled it up & it wouldnt crank......put in a new plug & it still wouldnt crank so i tried another new plug.........still nothing......the glow starter was fully charged too......recon it could be the fuel ? it is almost a year old but never opened till the other day & its been in the closed where its at a stable temperature in the house........