GM Storm/Spectrum 1985-1993 Repair Guide

EMISSION CONTROLS

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The emission control system begins at the air intake and ends at the tailpipe. The emission control system includes various sub-systems such as the positive crankcase ventilation system, evaporative emission control system, the exhaust gas recirculation system and exhaust catalyst, as well as the electronic controls that govern the fuel and ignition system. These components are combined to control engine operation for maximum engine efficiency and minimal exhaust emissions.

 
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