2022 Ford Transit Spark Plug Type & Gap

Quick reference

Why the right plug matters

Spark plugs play a critical role in your 2022 Ford Transit's engine performance, fuel efficiency, and emissions. Using the correct type and gapping them properly is paramount. The "heat range" of a spark plug refers to its ability to dissipate heat. A plug that's too hot can lead to pre-ignition and detonation, damaging your engine. A plug that's too cold can cause fouling, leading to misfires. Your Transit's engine is designed for a specific heat range, and the OEM plugs are engineered to meet this requirement.

Electrode material is another crucial factor. Most modern vehicles, including the 2022 Ford Transit, come equipped with iridium or platinum spark plugs from the factory. These precious metals offer superior durability and longevity compared to traditional copper plugs. Iridium, being harder and having a higher melting point, generally allows for smaller, finer electrodes, which results in a more concentrated spark and improved ignitability. Platinum plugs offer similar benefits but are typically not as long-lasting as iridium. While copper plugs are excellent conductors of electricity, they wear down much faster, necessitating more frequent replacement.

How to gap a spark plug

Even "pre-gapped" spark plugs should always be checked for correct gap before installation, as handling during shipping can alter the gap. For your 2022 Ford Transit, using a wire-style spark plug gap gauge is recommended. Avoid using a ramp-style gauge, especially on fine-wire iridium or platinum plugs, as it can damage the delicate electrode tip.

To gap a spark plug, carefully insert the appropriate wire gauge between the center and ground electrodes. If the gap is too small, gently bend the ground electrode outwards until the gauge slides in with slight resistance. If the gap is too wide, carefully tap the ground electrode on a non-marring surface until the gap closes slightly. Always ensure the ground electrode remains parallel to the center electrode.

Replacement procedure tips

The 2022 Ford Transit utilizes a coil-on-plug (COP) ignition system, meaning each spark plug has its own individual ignition coil mounted directly above it. This design eliminates spark plug wires, reducing potential points of failure.

Coil-on-plug removal: To access the spark plugs, you'll need to disconnect the electrical connector from each coil and then remove the bolt (usually a 7mm or 8mm) securing the coil to the valve cover. Once the bolt is out, gently twist and pull upwards on the coil to remove it. Be careful not to pull on the electrical wire itself.

Anti-seize debate: There is ongoing debate about using anti-seize on spark plug threads. Most modern spark plugs feature a special coating from the factory that prevents seizing and provides consistent torque readings. Applying additional anti-seize can lead to over-torquing and potential damage to the cylinder head threads, as it acts as a lubricant and changes the friction coefficient. Consult your Ford owner's manual or a reputable service manual for specific recommendations.

Dielectric grease on boots: It's good practice to apply a small amount of dielectric grease inside the spark plug boot (the rubber portion that connects to the top of the spark plug). Dielectric grease helps to seal out moisture, prevents corrosion, and makes future removal easier.

Known issues

Fortunately, the 2022 Ford Transit does not have widely reported widespread issues related to spark plugs or ignition systems like some previous Ford engines (e.g., the infamous 2-piece spark plug design in certain 3-valve modular engines). However, regular maintenance and attention to spark plug condition are still important. Misfires, rough idling, or a decrease in fuel economy can be signs that your spark plugs need attention.

Need plugs replaced? Find a shop on Repairius.