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Home >> Jeep >> 1990 >> Wrangler Base, 4.2 T, Standard >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Ignition System >> Ignition/Coil Wire Replacement Precautions >> Removal & Installation

Removal & Installation

Using care, disconnect the spark plug and coil wire boots and wires. Twist the boot one half turn and pull on the boot to disconnect the wire.

When replacing the spark plug and coil wires, carefully route the wires correctly and secure them in their proper channels retainers.

Failure to route the wires properly can cause the radio to reproduce ignition noise, cross ignition of the plugs, or can short circuit the wires to ground.