Installation Procedure
WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ensure that the spark plug washer is positioned correctly.
- Inspect the spark plug gap. Adjust the gap as needed.
Specification: Spark plug gap: 1.524 mm (0.060 in)
NOTE: Refer to Fastener Notice in Cautions and Notices. - Hand start the spark plug into the corresponding cylinder.
- Tighten the spark plug.
Tighten:
- For used heads, tighten the plug to 15 N.m (11 lb ft).
- For new aluminum heads, tighten the plug to 20 N.m (15 lb ft).
- For new iron heads, tighten the plug to 30 N.m (22 lb ft).