when I did my 1900 (nov will be two years) I changed plugs to tr6. thinking about it this morning, I am running 10mm taylor wires and same plugs. how often with a blower should they be changed? not having any problems, was just a random thought.
I change mine every time I remove the heads or change the cam which has been 4 or 5 times in the 25000 miles I have on it. LolI'm on my third set...Just past up 18K :dunno: