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Do Ford trucks have spark plugs?

Yes for gasoline-powered Ford trucks; diesel versions use glow plugs instead, and fully electric Ford trucks do not use ignition-related plugs at all. This distinction matters for maintenance and starting in different engine families sold in recent years.


Gasoline-powered Ford trucks


Gasoline engines in Ford trucks rely on spark plugs for ignition. The most common current Ford pickup engines—such as those found in the F-Series—use spark plugs and coil-on-plug ignition systems. Below is a quick guide to representative gasoline engines you’ll find in Ford trucks and what to expect regarding ignition components and maintenance.


Examples of common gasoline engines and their ignition setup and maintenance expectations:



  • 2.7L EcoBoost V6 — uses spark plugs with coil-on-plug ignition; replacement intervals typically in the 60,000–100,000 mile range depending on plug type and driving conditions.

  • 3.5L EcoBoost V6 — uses spark plugs; modern iridium/platinum plugs are designed for long life, often around 60,000–100,000 miles before replacement, depending on usage.

  • 5.0L V8 (Coyote) — uses spark plugs; standard maintenance often targets replacement near 100,000 miles for long-life plugs, with variations by model year and driving style.

  • 3.3L V6 — base gasoline option in some F-Series trims; uses spark plugs and coil-on-plug ignition with similar replacement windows.

  • 3.5L PowerBoost Hybrid — gasoline engine paired with electric motor; uses spark plugs and coil-on-plug ignition, with replacement intervals similar to other modern gasoline engines.


Concluding note: For gasoline-powered Ford trucks, expect spark plugs to be part of the ignition system, and follow the vehicle’s maintenance schedule or consult the owner’s manual or dealer for exact replacement intervals.


Diesel-powered Ford trucks


Diesel engines in Ford trucks rely on glow plugs rather than spark plugs. Glow plugs heat the air in the cylinders to aid starting, especially in cold weather, because diesel ignition is achieved by compression rather than a spark. Here are the primary diesel options you’ll typically see on Ford heavy-duty trucks and how ignition differs.


Representative diesel engines and their ignition systems:



  • 6.7L Power Stroke V8 — uses glow plugs to aid cold starts and combustion; there are no spark plugs in this engine’s ignition system.

  • 3.0L Power Stroke — inline-six diesel used in some F-Series models and other Ford trucks; relies on glow plugs for preheating at startup, not spark plugs.


Concluding note: Diesel-powered Ford trucks do not require spark plugs for ignition; instead, they use glow plugs. Replacement intervals for glow plugs vary by engine, driving conditions, and maintenance history, so refer to the owner’s manual or a Ford service advisor for exact guidance.


Summary


In Ford trucks, the ignition component depends on the powertrain: gasoline engines use spark plugs; diesel engines use glow plugs; electric models have no internal-combustion ignition components at all. If you own or plan to buy a Ford truck, check your specific engine family to understand the type of ignition, maintenance intervals, and replacement needs as outlined in the official manual or by a Ford technician. Understanding this distinction can save time and prevent misapplications when scheduling service or performing DIY maintenance.

Which Ford engine blew spark plugs?


One of the common issues of the modular platform was its tendency to blow out spark plugs. This issue happened the most on the 5.4 Triton from 1997 to 2003. During this era, the motor commonly powered the F-Series pickups, E-Series vans, and the Expeditions/Navigators.



Do Fords have spark plugs?


Platinum-Tip Spark Plug Used for conventional distributor-equipped and coil-on-plug ignition systems found in many Ford, Lincoln and Mercury vehicles. High melting point provides excellent resistance to erosion. Provides service intervals from 60,000 to 100,000 miles.



Does a Ford F-150 have spark plugs?


Yes, every Ford F-150 has spark plugs, as they are essential for the internal combustion engine to start and run. The spark plugs create a spark that ignites the fuel-air mixture in each cylinder, generating the power to move the truck. 

  • Function: Spark plugs ignite the fuel in the engine's cylinders. Without them, the truck would not be able to start or continue running. 
  • Location: The spark plugs are located in the cylinder heads and are accessed through ignition coils, which are connected to them via spark plug wires or directly via harnesses. 
  • Maintenance: Spark plugs can wear out or become fouled over time, which can lead to issues like misfires, hesitation, poor fuel economy, and difficulty starting. They typically need to be inspected around the 30,000-mile mark and replaced every 60,000 miles or as needed. 



What trucks don't have spark plugs?


A diesel engine has no spark plugs because it uses a compression ignition process. The cylinders in the combustion chamber have glow plugs that heat the chamber to aid ignition if a diesel engine is cold.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.