spark, air, and fuel, and it wont fire?????????

[kilabeez0]

my restored atc70 ran great. i put it away and went to fire it up a week later to show my buddies. it wouldn't fire. we pulled the plug (which i haven't changed since i got it) sprayed starting fluid in the cylinder and it still wont fire. we put the plug up against the case and pulled it, and it had good spark. the air filter is a brand new k&n knock off so i know it's getting air. even if the spark is weak, it's still there, why wont it even attempt to fire?

[Jim mac]

weak spark is usually the culprit. Dont know why these things perfer new plugs but for a few bucks might as well try a new plug, you might be surprised. Jim

[TECATEMATT]

dude try changing the plug with a new one it mightwork. Worked for me when i had the same problem on my tecate put a new plug and she fired up on on kick!

[jeffatc250r]

When i first got the 110 i have currently it had spark and wouldnt run, make a long story short i bought a new plug and it fired first pull, sometimes its as simple as that. Hope thats the case with you :beer

[1upfront]

I have had that happen to my ct70 before, its so frustrating:mad: but like these guys all said put a new plug it's like MAGIC!! :D