I have removed the panels and cleaned the injectors, which were not dirty. It seems as if it is not getting spark. I can feel slight gas blowing, as well as smell the gas and feel slight heat around the igniters. By reading my chart, I am getting a code six. This indicates that it is 'Failure to ignite' from reading the chart. We have tested th wires and no luc. My furnace is an Internatinal Comfort heating and air unit, 4 years old. The blower is working and I have checked the breakers. Any suggestions?