2016 Nissan Titan — Spark Plug Type & Gap

Quick reference

Why the right plug matters

Choosing the correct spark plug for your 2016 Nissan Titan is crucial for optimal engine performance, fuel efficiency, and longevity. The spark plug is responsible for igniting the air-fuel mixture in the combustion chamber. If the plug isn't right, it can lead to misfires, reduced power, poor fuel economy, and even damage to your engine.

There are several key specifications to consider:

• Heat Range: This refers to the plug's ability to dissipate heat from the combustion chamber. A plug that's too hot can cause pre-ignition and detonation, while one that's too cold can lead to fouling. The OEM specified heat range for your Titan's engine ensures the plug operates within the ideal temperature window.
• Electrode Metal: Different materials are used for the spark plug electrodes, each with its own advantages:
  • Iridium: These are the most common type for modern vehicles and are standard in your 2016 Nissan Titan. Iridium is extremely hard and offers excellent durability, allowing for very fine electrodes that produce a strong, focused spark. This translates to longer service intervals and consistent performance.
  • Platinum: While not as durable as iridium, platinum plugs also offer a good lifespan and are often a step up from traditional copper plugs.
  • Copper: These are typically found in older vehicles or specialty applications. Copper is an excellent conductor of electricity but is softer and wears faster, requiring more frequent replacement.

For your 2016 Nissan Titan 5.6L V8, the factory-installed plugs are long-life iridium, and it's highly recommended to stick with this type to maintain factory performance and service intervals.

How to gap a spark plug

While most iridium spark plugs come pre-gapped from the factory, it's always a good idea to double-check the gap before installation, especially if you're not using OEM plugs. For the 2016 Nissan Titan 5.6L V8, the correct gap is 0.043 inches (1.1 mm).

To gap a spark plug:

1. Use a wire-type spark plug gapping tool: Disc-style gappers can damage the fine iridium electrode. A wire gauge allows you to accurately measure the gap without putting undue stress on the electrode.
2. Slide the wire gauge into the gap: Find the wire on the tool that matches the specified gap (0.043 inches or 1.1 mm). It should slide in with a slight drag.
3. Adjust if necessary: If the gap is too small, use the gapping tool to gently bend the ground electrode outwards. If the gap is too large, gently tap the ground electrode on a hard surface to close the gap slightly. Be extremely careful not to touch or bend the delicate center iridium electrode.

Replacement procedure tips

Replacing spark plugs on your 2016 Nissan Titan 5.6L V8 is a manageable DIY task for most, but here are some tips specific to this engine:

• Coil-on-Plug System: Your Titan uses a coil-on-plug (COP) ignition system, meaning each spark plug has its own individual ignition coil directly mounted on top of it. To access the spark plugs, you'll need to carefully disconnect the electrical connector from each coil and then remove the coil mounting bolt. Gently pull the coil straight up to remove it from the spark plug well.
• Anti-Seize Debate: There's an ongoing debate about using anti-seize compound on spark plug threads. Nissan and NGK (the OEM plug manufacturer) generally recommend against using anti-seize on modern nickel-plated spark plugs. The nickel plating provides adequate anti-seize properties, and adding more can lead to over-tightening and potential damage to the cylinder head threads or the plug itself. If you do choose to use anti-seize, apply it very sparingly and reduce the torque specification by approximately 15-20%.
• Dielectric Grease on Boots: It's good practice to apply a small amount of dielectric grease inside the spark plug boot (the bottom part of the ignition coil that connects to the spark plug). This helps to seal out moisture, prevent corrosion, and makes future removal easier. Be careful not to get any grease on the actual electrode or insulator tip of the spark plug.
• Torque Wrench is Critical: Always use a torque wrench to tighten your new spark plugs to the specified 18 lb-ft (25 Nm). Over-tightening can strip cylinder head threads, while under-tightening can lead to plugs vibrating loose and causing misfires.

Known issues

The 2016 Nissan Titan 5.6L V8 engine, while generally robust, doesn't have any widely reported or common spark plug-specific issues like the notorious Ford 3-valve two-piece spark plug breakage or GM coil ionization-sensing problems. Adhering to the recommended service intervals and using the correct spark plugs will ensure trouble-free operation.

Need plugs replaced? Find a shop on Repairius.