I also have a fusion and the stock glow plug that comes with the motor is not very good. I recommend you get a different glow plug, you should also turn your low speed needle in 1/8 of a turn as well as your high speed. Then put your finger over the exhaust for 3 seconds while turning the motor over with your drill. Then attach the igniter and turn it over, it should fire right up. I noticed on mine that the stock plug didn't glow very bright even when it was brand new. I changed it out for a mc-59 and my fusion runs great. Hope this helps. By the way you should always do the finger over the exhaust thing everytime you start your fusion. It really helps.