Quote:
Originally Posted by Trbobuick
I think what you are actully seeing is unused fuel not being burnt by a waste spark ignition , not an improved spark.
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Yes. I think I see your point. Fuel
and air that enters the exhaust system, partially burning in the exhaust system, raising the temps. Is that what you're suggesting?
If the a/f charge is burning in the exhaust, it would have to be only partially burning, otherwise if the whole mixture burned in the exhaust there wouldn't be any oxygen for the O2 to read. We all know that missing cylinders will actually read as a lean signal on the O2, telling me that a lot of unburned oxygen is being read.