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Home >> Porsche >> 1989 >> 928 CS V8-4957cc 5.0L >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Air/Fuel Mixture >> Specifications

Air/Fuel Mixture: Specifications

CO level at idle engine warm 0.4-1.2 %*
HC level at idle engine warm <300 ppm

* Measured upstream of the catalyst with O2 sensor connected

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