When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a 1985 atc 70 that has the spark plug drilled out to a larger size. How would a person determine what type of plug to put into it and how would a person check to see if it is getting plenty of fire throught he coil.