Gas Engine Ignition Spark Plug Replacement - Left Side

Engine Controls and Fuel - 5.3L L84 or 6.2L L87 | Repair Instructions | Document ID: 5543895 Removal Procedure

Gas Engine Ignition Spark Plug Replacement - Left Side — figure 1

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Gas Engine Ignition Spark Plug Replacement - Left Side — figure 2

2. Remove the valve rocker arm cover insulator (3) by lifting up and disengaging the 3 upper intake manifold sight shield grommets (1) from the 3 engine front cover studs (2).

Gas Engine Ignition Spark Plug Replacement - Left Side — figure 3

Note

Pull only on the spark plug wire boot to remove the wire.

3. Twist the spark plug wire boot 1/2 turn and disengage the spark plug wire (1) from the gas engine ignition spark plug (2).
4. Inspect the spark plug wire for damage and replace if necessary.

Gas Engine Ignition Spark Plug Replacement - Left Side — figure 4

5. Loosen the gas engine ignition spark plug 1 or 2 turns.
6. Use a brush, or compressed air in order to remove any dirt from the gas engine ignition spark plug.
7. Remove the gas engine ignition spark plug (1) and place the plug in a tray marked with the corresponding cylinder number. Cleaning and Inspection Procedure - Conditional

Note

The following cleaning and inspection and/or overhaul steps are ONLY to be performed as determined necessary based on the condition of the part being removed with the intention of reinstallation. The labor time to perform any of these steps is not included in the base labor time and if required would need to be documented and submitted as Other Labor Hours for warranty claim reimbursement. A description of the repairs performed must be documented in the technician correction comments.

Note

Spark plug wire integrity is vital for proper engine operation. A thorough inspection will be necessary to accurately identify conditions that may affect engine operation.

1. Inspection the spark plug wire for the following conditions: 1.1. Correct routing of the spark plug wires. Incorrect routing may cause cross-firing. 1.2. Inspect for any signs of cracks or splits in the wires.
2. Inspect each boot for the following conditions: 2.1. Tearing 2.2. Piercing 2.3. Arcing 2.4. Carbon tracking 2.5. Corroded terminals  3. If corrosion, carbon tracking or arcing are indicated on a spark plug wire boot or on a terminal, replace the wire and the component connected to the wire. Installation Procedure

Caution

Refer to Component Fastener Tightening Caution.

1. Gas Engine Ignition Spark Plug (1) » Install and tighten — Fastener Specifications
2. Inspect the inside of the spark plug rubber boot for a thin, even coat of grease. If there is no grease present or additional grease is necessary, apply a thin coating of dielectric grease evenly to the inside of the spark plug rubber boot up to a depth of 15 mm(0.59 in) from the end of the boot. Adhesives, Fluids, Lubricants, and Sealers

Note

To ensure the spark plug wire rubber boots are correctly seated during installation, push the rubber boot onto the spark plug until 2 audible clicks are heard.

3. Spark Plug Wire (1) » Install

4. Install the valve rocker arm cover insulator (3) ensuring the 3 upper intake manifold sight shield grommets (2) engage the 3 engine front cover studs (1).

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