A Guide to Spark Plug Replacement for the 2007-2019 Ford Edge
Everything you need to know about choosing and replacing the spark plugs in your Ford Edge to keep it running smoothly.
- For V6 engines (3.5L, 3.7L, 2.7L), replacing rear spark plugs is labor-intensive, requiring intake manifold removal.
- Delaying spark plug replacement on V6 models can lead to ignition coil and expensive PCM (engine computer) failure.
- Replacement on the 2.0L EcoBoost is a much simpler, DIY-friendly job that takes about an hour.
- Many owners recommend using OEM Motorcraft plugs, but high-quality Iridium plugs from NGK, Denso, or Bosch are also excellent choices.
Signs of Failing Spark Plugs
When your spark plugs start to wear out, your Edge will give you several warning signs. One of the most common is a rough idle, where the engine shakes or sputters when you're stopped. You might also notice your "Check Engine" light comes on, often with misfire codes like P0300, P0301, P0302, P0303, P0304, P0305, or P0306. Other symptoms include poor acceleration, a decrease in fuel economy, and difficulty starting the engine, especially when it's cold. In some cases, you might hear a knocking or pinging sound from the engine as the plugs misfire.
A Critical Warning for V6 Owners
If you have a 3.5L or 3.7L V6 engine, it is critical to replace your spark plugs at the recommended interval. Letting them go for too long can cause an ignition coil to fail. When a coil fails, it can send a voltage spike that damages the Powertrain Control Module (PCM), which is the engine's main computer. This turns a routine maintenance job into a very expensive repair.
🎬 Watch: Step-by-step guide for changing plugs on Ford 3.5 or 3.7 V6 engines.Choosing the Right Aftermarket Spark Plugs
When shopping for new spark plugs, you'll find several types and brands. While many owners stick with the original equipment (OEM) Motorcraft plugs to ensure compatibility, high-quality aftermarket options from brands like NGK, Denso, and Bosch are also excellent choices.
- OEM Motorcraft: These are the plugs your Edge came with from the factory. They are a reliable, safe bet and are engineered specifically for your engine. Many owners and mechanics recommend using them to avoid potential issues.
- Premium Aftermarket (NGK, Denso, Bosch): These brands are well-respected and often manufacture the original parts for Ford. Their Iridium and Platinum plugs typically offer a long service life, sometimes exceeding 100,000 miles. They are an excellent alternative to OEM and are trusted by many Edge owners.
- Standard Aftermarket (Autolite, Champion): These brands provide a more budget-friendly option. While they meet the basic requirements, some owners prefer to stick with OEM or premium brands for the turbocharged EcoBoost engines, which place higher stress on ignition components.
For EcoBoost engines (2.0L and 2.7L), using high-quality Iridium plugs is highly recommended due to the higher cylinder pressures and heat created by the turbochargers.
Generation and Engine Differences
The spark plug replacement job varies significantly depending on your Edge's engine.
- 2.0L EcoBoost I4: This is the most straightforward replacement. All four spark plugs are easily accessible at the top of the engine after removing the plastic engine cover and some air intake ducting. The job can typically be done in about an hour. 🎬 Watch: How to change spark plugs on a 2.0L EcoBoost engine.
- 3.5L & 3.7L V6: This job is more complex. The front three spark plugs are easy to access, but the rear three are located under the upper intake manifold. The manifold must be removed to reach them, which adds significant time and labor to the job. Because of this, it's a good idea to replace the intake manifold gaskets at the same time. 🎬 See this replacement walkthrough for 2007-2014 Ford Edge 3.5L V6 models.
- 2.7L EcoBoost V6: Similar to the other V6 engines, the rear spark plugs are more difficult to access than the front ones. Given the performance nature of this engine in the Edge Sport and ST models, using high-quality, correctly gapped plugs is crucial.
Pro Tip: A Note on Seized Plugs
Some Ford engines have been known to have issues with spark plugs seizing in the aluminum cylinder heads. While not as widespread on the Edge engines as on some earlier Ford V8s, it's wise to perform the replacement on a cold engine. If a plug feels excessively tight when trying to loosen it, stop. Soaking the plug with a small amount of penetrating oil and working it back and forth gently can help, but if you are unsure, it is best to let a professional handle it to avoid breaking the plug off in the head, which leads to a much more costly repair.
| Part | Price Range (Per Plug) |
|---|---|
| New Aftermarket Spark Plug | $5.78 - $20.58 |
Frequently Asked Questions
How often should I change the spark plugs on my Ford Edge?
Ford generally recommends replacing the spark plugs at around 100,000 miles. However, for turbocharged EcoBoost engines, some experts suggest a shorter interval of 40,000 to 60,000 miles due to the higher stress on the ignition system. If you notice any failure symptoms, you should have them checked regardless of mileage.
Is it hard to change the spark plugs on a Ford Edge?
It depends on your engine. For the 4-cylinder 2.0L EcoBoost, it is a relatively easy DIY job. For the V6 engines (3.5L, 3.7L, 2.7L), the rear plugs are difficult to access and require removing the upper intake manifold, making it a much more involved job for a DIYer.
Should I replace my ignition coils with my spark plugs?
It is not required, but it is often recommended, especially on higher-mileage vehicles or if you are already paying for the labor to remove the intake manifold on a V6. A failing spark plug can damage an ignition coil. If one coil has failed, others may not be far behind.
Do I need to gap the new spark plugs?
Most modern Iridium and Platinum spark plugs come pre-gapped from the factory and often have a warning on the box not to gap them, as you can damage the fine tip. It is still a good practice to gently check the gap with a feeler gauge to ensure it wasn't damaged in shipping, but do not try to adjust it unless absolutely necessary and you have the proper tool.
Are there any recalls for Ford Edge spark plugs?
There are no specific recalls for spark plugs on the 2007-2019 Ford Edge. There was a recall for 2021-2022 models with the 2.7L engine related to faulty intake valves, but this does not apply to the 2007-2019 model years.
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Technical Specifications
OEM Part Numbers: SP-411 SP-520 SP-537 SP-548 SP-580 CYFS12YPC
Spark plug type and gap vary by engine. The 3.5L/3.7L V6 engines typically use platinum or iridium plugs. The 2.0L and 2.7L EcoBoost engines require iridium plugs to handle the higher cylinder pressures of a turbocharged engine. Always verify the correct part number for your specific engine and model year.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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