2016 Chevrolet Equinox Spark Plug Type & Gap

Quick reference

Why the right plug matters

Choosing the correct spark plug for your 2016 Chevrolet Equinox is crucial for optimal engine performance, fuel efficiency, and longevity. Spark plugs are meticulously designed for specific engines, taking into account factors like heat range, electrode material, and gap. Using the wrong plug can lead to various problems, including misfires, reduced power, decreased fuel economy, and even catalytic converter damage.

Heat Range: This refers to the plug's ability to dissipate heat. A "cold" plug dissipates heat quickly, ideal for high-performance engines, while a "hot" plug retains more heat, suitable for engines that run cooler. An incorrect heat range can lead to pre-ignition (too hot) or fouling (too cold).

Electrode Metal:

• Iridium: This is the most common and recommended material for modern vehicles like your Equinox. Iridium is incredibly durable, offering a long lifespan (typically 100,000 miles or more) and a fine-wire electrode that provides a strong, consistent spark. Both the ACDelco OEM plugs and the recommended NGK and Denso aftermarket options for your Equinox are iridium-tipped.
• Platinum: Platinum plugs offer a good balance of performance and longevity, often lasting around 60,000 to 80,000 miles. They are more durable than copper but not as long-lasting as iridium.
• Copper: While copper is an excellent conductor, copper-only spark plugs have a much shorter lifespan (around 20,000 to 30,000 miles) due to their softer electrode material. They are generally not suitable for modern engines that require extended service intervals.

How to gap a spark plug

While most iridium spark plugs come pre-gapped from the factory, it's always a good practice to double-check the gap before installation. This is especially true if the plug has been dropped or handled roughly. For your 2016 Equinox, the recommended gap is 0.043 inches (1.1 mm).

To gap a spark plug, you'll need a wire-type gap gauge. Avoid using disc-style gauges on fine-wire iridium plugs, as they can damage the delicate electrode. Gently slide the correct wire gauge between the center and ground electrodes. If adjustment is needed, very carefully bend the ground electrode using the gapping tool. Never try to bend the center electrode, as this can damage the plug.

Replacement procedure tips

Both the 2.4L I4 and 3.6L V6 engines in the 2016 Chevrolet Equinox use a coil-on-plug (COP) ignition system. This means each spark plug has its own ignition coil directly mounted on top of it, eliminating the need for traditional spark plug wires.

1. Access: For the 2.4L I4, the spark plugs are relatively easy to access on top of the engine. For the 3.6L V6, the rear bank of plugs (closest to the firewall) will require some more effort, potentially involving removal of the intake manifold for better access, but it