Oldsmobile 19110938 Cap Asm,Distributor

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It is important to install the spark plug wires in the correct order on the distributor cap. If the distributor cap terminals are burnt or crusty, indicating the need for replacement, a new distributor cap should be purchased. To replace the cap, disconnect the ignition switch/battery feed wire and tachometer lead from the old cap. Release the old cap from the distributor body by pushing downward on the slotted latches and turning them ¼ turn. For L4 engines, a stubby screwdriver may be needed. On V6 engine distributors, remove the retaining ring located on top of the cap. Transfer the spark plug wires one at a time from the old cap to the new one, being careful not to pull on the wire insulation. For L4 engines, push the plug wires and boots firmly into the new distributor cap. For V6 engines, fit the plug wires into the retaining ring before refitting it onto the cap. Finally, place the new cap and plug wires into position over the top of the distributor and lock it into place by pushing and turning the latches, ensuring that the cap is firmly seated.

Position the coil spring, rubber seal washer, and coil cavity into the distributor cap.

The first step is to visually check the spark plug wires while the engine is running.

Spark plug wires should be inspected one at a time to prevent mixing up their order. Each original plug wire should be numbered to help identify its location.