Ok, I'm working on my dryer. We started to smell gas so I turned the line off and removed the front panel. I'm thinking that the coils need replaced. I got the new coils and check for any gas leaks then installed the coils. I started the dryer with the drum and front panel off. The coils clicked and the igniter came on and the flame started. I thought it was fixed. I put it back together and tried it again and I could hear the coils click but no flame and I smelled the gas again. There is no peek hole in the lower front panel so I couldn't watch what it was doing, so I open the top and watched from there. The coils clicked and the igniter came on but it would,t light. That was why I could smell gas. My question is, why will it light when all apart but not when together?