You may not have to change the igniter. It works like a spark plug (passing a small spark from an electrode (a small wire sticking from the bottom of the ceramic tube at the lower end of the igniter) to a metal plate positioned close to the tip. If the plate gets covered with soot or grease from cooking it won't work. Try cleaning the plate and bending it closer to the igniter tip. If the igniter is really bad and needs replacement, you can get a new one at most hardware stores. Installation is very easy.
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You may not have to change the igniter. It works like a spark plug (passing a small spark from an electrode (a small wire sticking from the bottom of the ceramic tube at the lower end of the igniter) to a metal plate positioned close to the tip. If the plate gets covered with soot or grease from cooking it won't work. Try cleaning the plate and bending it closer to the igniter tip. If the igniter is really bad and needs replacement, you can get a new one at most hardware stores. Installation is very easy.