Sometimes my furnace will go through the cycle of trying to ignite 4 times without actually igniting. The 2 right burners will light up but will die out after a few seconds while the 2 left ones won't light at all. After it attempts to light up 4 times the whole system shuts down and a red light starts to blink.

I just replaced the ignator a few monthes back and seems to work fine. I have a new filter as well so I don't think it could be air flow. What else could it be?

My furnace doesn't stay lit what should I look for

My furnace doesn't stay lit what should I look for