original Toro PP hard start
I said to my son...she aint gonna start this year'. I have had problems starting initially each season and when its cold outside...occassionally at other times as well. Well, it would not start. Then I remembered this happened last year and I changed the plug (that was fouled after only a brieif period of time) and she started right up. Each year I buy a little kit containing the oil, filter and plug and change all 3. I grabbed the plug out and immediately replaced it and she started right up...it was smokey for about a full minute. Every now and then I here a pop or backfire(?) but it ran fine and cut fine--not really sure how to describe the sound.
I keep good gas with stabil, now and then I run an ethanol additive now and then and recall running something reccomended her thru a tank of gas.
What would cause the plug to prematurely foul?