All four burners will not ignite at the same time.
This Comfort maker furnace is about 10 years old.
All four burners will not ignite at the same time. The start up looks good until burner ignition. The first burner ignites because it is close to the igniter, and the second burner also ignites. But the third and fourth burners usually takes 10 to 30 seconds longer to ignite. The flame just doesn't cross the gap quickly.
I have no idea what the problem is. Mechanical defect in the burner apparatus? It doesn't appear to be a draft problem or gas pressure problem. Once all 4 burners are ignited the four flames look the same.
Thanks in advance for any ideas.