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Home >> Nissan-Datsun >> 1985 >> 300ZX GL, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (EFI Control System) >> Operation >> Engine Controls >> Spark Plug Switching Control

Spark Plug Switching Control

WARNING: This page is about a different car, the 1985 Nissan 200SX. However, it is still accessible from the selected car via links, so may be relevant.

The spark plug switching control system is designed to change the ignition system from 2-plug to 1-plug ignition during heavy load driving in order to reduce engine noise. The system also functions to advance ignition timing by a specified value during 1-plug ignition.

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