My Intek 24 requires a few turn overs with full choke and full throttle lever after sitting for weeks in the garage. Once hot it fires immediately. You can get the "sure fire" type plugs (looks like tungsten center electrode) for most small engines. I found them at walmart. I am still using regular Champions. I also suggest keeping the tractor from moisture soaking as in leaving it outside uncovered. The mag puts out a very weak voltage (compared to car) which is barely visible on a timing light. There is plug booty silicone grease which I use to improve the seal of the rubber on the porcelin plug body.