The stoichiometric (STOICH) air/fuel ratio is the chemically correct ratio, theoretically all of the oxygen and all of the fuel are consumed. The mixture is neither rich nor lean. However, due to the fact that combustion is never perfect in the real world, there will always be a small amount of oxygen left in the exhaust. This small amount that is left is what the oxygen sensor measures.
Autometer Ultralite Air Fuel Gauges from HorsepowerFreaks
autometer ultralite air fuel gauges from horsepowerfreaks air fuel gauges. Install and installation help available for parts and accessories for these model years.
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