Installation Procedure

Measure the spark plug gap on the spark plugs to be installed. Compare the measurement to the gap specifications. Refer to Ignition System Specifications . Correct as necessary.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the spark plugs to the engine.
Tighten:
- If installing the spark plugs to a new cylinder tighten the plugs to 27N.m (20 lb ft).
- If installing the spark plugs to an existing cylinder tighten the plugs to 15N.m(11 lb ft).

Fig 1: Identifying Spark Plug & Wire

Courtesy of GENERAL MOTORS CORP.

Connect the spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement .