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Home >> Mercury >> 1991 >> Capri Base, Standard >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Ignition Timing Control System >> Knock Control Unit (CAPRI)
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Knock Control Unit (CAPRI)

The Knock Control Unit filters normal engine vibration signals from the KS, then sends a signal to the ignition module to retard spark timing. This unit, used only on 1.6L turbo engines, is located on right side of engine compartment.