How often should I change the spark plugs in my Chevy Equinox?

In most Chevrolet Equinox models, spark plugs should be replaced around 100,000 miles if you’re using iridium or platinum plugs; copper-core plugs typically have a 60,000-mile life. Always verify with your owner’s manual or dealer for your exact engine and plug type.

The replacement interval can vary by engine generation, driving conditions, and whether your engine uses direct injection, which can affect carbon buildup and plug life. The Equinox has used several engines across its generations, including 2.4L four-cylinders and various V6 options, each with its own maintenance schedule. Read on for practical guidance and how to plan maintenance with your mechanic.

What affects spark plug life in a Chevy Equinox

Typical intervals depend on plug material and engine design. Additional factors like driving style and climate can shorten or extend life.

Plug types and engine configurations

The following guidance reflects common configurations found in Equinox models over the years and how plug material typically influences replacement timing.

• Iridium or platinum plugs: commonly rated for about 100,000 miles under normal driving.


• Copper-core plugs: commonly rated for about 60,000 miles.


• Direct-injection engines (DI) may experience carbon buildup that can shorten plug life or require earlier inspection; many operators still replace at around 100,000 miles with the recommended plug type, but short trips or severe driving can increase service needs.

In practice, follow the manufacturer’s schedule and have the system inspected if you approach the higher end of the interval or notice symptoms.

Signs you should check or replace sooner

Watch for common symptoms that signal worn or fouled plugs and ignition components before they become a bigger problem.

• Rough idle or engine misfires, especially at low speeds or cold starts


• Dramatically reduced acceleration or hesitation during driving


• Lower fuel economy and higher exhaust emissions


• Check Engine Light with misfire or ignition-related codes


• Difficulty starting or frequent stalling

If you notice these symptoms, have the spark plugs and related ignition parts inspected by a qualified technician. Addressing issues early can prevent more expensive repairs.

Maintenance steps and best practices

To minimize problems and ensure optimal performance, consider these steps when replacing spark plugs or planning maintenance:

• Use the OEM-recommended plug type and torque specification for your engine


• Replace the ignition wires or coil packs if your Equinox uses them, and inspect ignition coils for wear


• Consider a fuel-system cleaning if you have a direct-injection engine to mitigate carbon buildup


• Keep a maintenance log to track when replacement is due

For model-year specifics, consult the owner’s manual or your Chevrolet dealer, as the recommended interval can vary by engine (2.4L, 3.0L, 3.6L, etc.) and generation.

Summary

In short, most Chevy Equinox owners can expect spark plugs to last about 100,000 miles with iridium or platinum plugs, or roughly 60,000 miles with copper plugs. Direct-injection engines can experience carbon buildup that affects replacement timing, so always check the official maintenance schedule for your exact engine and driving conditions. If in doubt, consult your owner’s manual or a trusted mechanic to ensure you replace plugs at the right interval for your vehicle.

What are signs of bad spark plugs?

Signs of bad spark plugs include rough idling, difficulty starting the engine, decreased fuel economy, and poor acceleration. You may also experience engine misfires, which can cause the vehicle to shake or hesitate, and the check engine light to illuminate. 
Performance issues

• Rough idling: The engine shakes or sputters when the car is stopped. 
• Engine misfires: The engine skips a beat, which can be felt as a hesitation or vibration. 
• Poor acceleration: The vehicle feels sluggish when you press the gas pedal. 
• Engine knocking: Unusual knocking or pinging sounds may come from the engine. 

Fuel and starting problems

• Poor fuel economy: You'll notice you need to fill up the gas tank more often. 
• Difficulty starting: The engine may crank for a longer time before starting. 

Visual and warning signs

• Check engine light: The light may come on, especially if the misfires are frequent. 
• Black exhaust smoke: The tailpipe might emit black smoke. 
• Visual inspection: When removed, a bad spark plug may show a worn electrode, a cracked insulator, or deposits of oil or fuel. 

How often do you change spark plugs in a Chevy Equinox?

Every 60,000 Miles
It's finally time for your spark plugs to be replaced and spark plug wires to be inspected. These mechanical components are responsible for the ignition spark that starts your Chevy Equinox. If your spark plugs are not properly working, you won't be able to travel.

How much does it cost to replace spark plugs in a Chevy Equinox?

The cost to replace the spark plugs in a Chevy Equinox typically ranges from $300 to $400 for a professional job, including parts and labor, though this can vary by model year and location. DIY replacement is significantly cheaper, with costs for parts and basic tools often falling between $20 and $50. 
Professional replacement

• Average range: Expect to pay around $300 to $400 for a shop or dealership to replace all four spark plugs, reports Reddit users and KBB. 
• Factors influencing cost: Prices can vary based on your specific Equinox model year and your geographic location. Some newer or more complex models might have higher costs. 
• Dealer vs. independent shop: Dealerships may charge more but often use manufacturer-recommended parts and have specialized training. Independent shops might be cheaper but could use aftermarket parts. 

DIY replacement

• Savings: Doing it yourself can save a significant amount of money. You may only need to spend $20 to $50 on the plugs and a few basic tools. 
• Ease: The job is considered relatively simple for those with some mechanical know-how and is often a good candidate for a DIY project, say Reddit users. 
• Tools and parts: You can find spark plugs online or at auto parts stores, with prices ranging from around $10 for a single ACDelco plug to $25 or more for premium brands. 

How to choose

• If you're not comfortable with car repairs, a professional replacement is the safer option.
• If you are comfortable with basic maintenance, the DIY route is a great way to save money.
• Always be sure to get the correct spark plugs for your specific model year and engine. 

What's the most common problem with the Chevy Equinox?

The most common issues include:

• Excessive oil consumption: Many owners report the engine rapidly burns or leaks oil, requiring frequent top-offs and risking severe engine damage if not closely monitored.
• Timing chain failure: Early timing chain wear or breakage can cause catastrophic engine damage and sudden breakdowns.