Spark Plug: Installation

Properly position each spark plug washer. Inspect each spark plug gap. Adjust each plug as needed. See SPARK PLUGS under IGNITION SYSTEMS in SERVICE & ADJUSTMENT SPECIFICATIONS - 4.3L ASTRO, BLAZER, CHEVY EXPRESS, SAFARI, SAVANA, SIERRA, SILVERADO, SONOMA & S10 PICKUP article. Hand start the spark plugs in the corresponding cylinders. Tighten the spark plugs to specification. See TORQUE SPECIFICATIONS  .