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Home >> Alfa Romeo >> 1976 >> Spider >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Catalytic Converters >> Testing

Catalytic Converters: Testing

With engine at normal operating temperature, run engine at 2500-3000 RPM for 2-3 minutes then bring engine to idle speed. After 30 seconds, check HC at tail pipe. HC must not exceed 180 ppm.