Alright so this is my second build and the first works great, this one not so much. I have tried 2 different spark plugs and 2 different CDI boxes and it won't fire! The wiring is correct and was both times. There is a good flow of gas because when I take out the plug there is a little gas on the end. I have tried just about everything... the second CDI box I know for a fact works because it is now on my first build which I just got done riding. If anyone has any suggestions please help! Also how would I check my spark plugs (check spark?) to se if they are bad?