Best Spark Plug & Ignition Tools for your Vehicle
Having the right spark plug and ignition tools can make maintenance and repairs on your vehicle's engine much easier. The spark plugs and ignition coil deliver the high voltage needed to ignite the air-fuel mixture in the engine's cylinders. Over time, these components wear out and need to be replaced. Having the proper tools allows you to get the job done quickly and avoid costly repairs at a shop.
Spark Plug Sockets and Wrenches
A spark plug socket is a specialized deep socket designed to fit around spark plugs. Spark plugs are recessed deep in the cylinder head, so you need a socket that can reach them. Choose a socket with a rubber insert inside to grip the spark plug when removing or installing. A spark plug wrench has a pivoting head that allows you to reach plugs at an angle.
Spark Plug Gap Tools
New spark plugs need to be gapped properly for optimal performance. A spark plug gap tool lets you accurately set the gap between the center and side electrodes. Common types include wire-style gap tools, blade gap tools, and coin-style gap tools. Make sure to get a gap tool designed for your vehicle's specific spark plug gap spec.
Coil Pack Remover Tools
Many modern vehicles use a coil pack ignition system rather than a distributor. Coil packs often get stuck in place over time. A coil pack remover tool grips the edges and provides extra leverage for removing stubborn coil packs.
Ignition Coil Pliers
Ignition coil pliers, also called boot pliers, help you remove the rubber boot from the top of the spark plug. The pliers grip the boot securely to pull it off without damage. They can also be used to install boot seals on new plugs.
Compression Testers
A compression tester screws into the spark plug hole to measure cylinder compression. Weak compression can cause ignition and performance problems. Checking compression can help you pinpoint issues like worn piston rings or leaky valves.
Other Helpful Tools
- Penetrating oil - Loosen stuck plugs
- Anti-seize compound - Lubricate plug threads
- Spark plug thread chaser - Clean up worn threads
- Magnet - Retrieve dropped parts
- Work light - Illuminate work area
With the right spark plug and ignition tools, you can keep your vehicle's engine running smoothly. Invest in quality tools from trusted brands and store them together in a portable toolbox for convenience. Following any recommended maintenance intervals for spark plug and coil replacement will also help maximize performance and fuel economy.
Must-Have Spark Plug & Ignition Tools for DIYers
Performing basic engine maintenance like changing spark plugs and ignition coils is very doable for DIYers. With the right tools, you can avoid the high labor costs of taking your car to the shop for routine spark plug and ignition coil service.
Spark Plug Socket Set
A spark plug socket set is essential for removing and installing spark plugs. Features to look for include:
- Rubber inserts to grip plugs
- Magnetic sockets to prevent dropped plugs
- Multiple socket sizes for different engines
- Extension bars for reaching recessed plugs
Spark Plug Gap Tool
A spark plug gap tool lets you set the gap between the center and side electrodes to the proper spec. Models like the blade style or coin style make gapping easy.
Ignition Coil Sockets
Many engines have ignition coils packed together that require specialized sockets for removal. A set of coil sockets in various sizes can handle both single and multi-coil packs.
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Spark Plug Pliers
These pliers securely grip the rubber boot on the end of spark plug wires for easy removal and installation. Models with angled heads provide better accessibility.
Torque Wrench
A torque wrench ensures spark plugs and ignition coils are tightened to the correct specifications. Over or under tightening can cause damage or future problems.
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Anti-Seize Compound
Anti-seize lubricant prevents spark plugs from seizing in the cylinder head. It also helps torque wrenches accurately measure tightness.
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Penetrating Oil
A penetrating spray like WD-40 helps loosen corroded or stuck spark plugs. Apply generously and let it soak in for easier removal.
Spark Plug Thread Chaser
A thread chaser cleans up any worn or damaged threads in the cylinder head to ensure spark plugs seat properly.
Ignition Coil Puller
This specialized tool grips stubborn ignition coils for safe removal. Very useful for pulling coils stuck due to rust and corrosion.
Compression Tester
This tool screws into the spark plug hole to measure cylinder compression. Knowing the compression numbers can diagnose worn piston rings, leaky valves, and more.
Safety Gear
Protect yourself with items like:
- Eye protection
- Work gloves
- Face mask
With this essential list of spark plug and ignition tools, you'll have everything needed for DIY maintenance. Be sure to reference your vehicle's factory service manual for the right procedures. Take it slow and be cautious when working around ignition components to avoid engine damage or injury.
Top-Rated Spark Plug & Ignition Tool Brands
When it comes to spark plug and ignition service, using quality tools from reputable brands makes the job easier and helps ensure reliability. Here are some top-rated tool brands recommended by mechanics and DIYers.
OEM Automotive Brands
Tool and parts manufacturers affiliated with auto makers produce high-quality options designed specifically for your vehicle:
- ACDelco - GM vehicles
- Motorcraft - Ford vehicles
- Mopar - Chrysler vehicles
Aftermarket Tool Brands
These leading brands specialize in manufacturing high-performing tools that often exceed OEM standards:
- Snap-on
- Mac Tools
- Matco Tools
- Gearwrench
- Lisle Corporation
Spark Plug Brands
For spark plug specific tools, go with plug brands you trust like:
- NGK
- Denso
- Bosch
- Autolite
- Champion
These companies make the actual spark plugs as well as specialized tools for gapping, removing, and installing their products.
DIY Brands
Trusted DIY tool brands include:
- Craftsman
- Kobalt
- Husky
- TEKTON
Their spark plug tools are affordable but still offer decent quality for the home mechanic.
Stick with trusted brands and buy the best individual tools you can afford. Proper spark plug and ignition service helps keep your vehicle running smoothly.
Spark Plug & Ignition Tool Buying Guide
Having the proper spark plug and ignition tools makes maintenance and repairs much easier. Here is a guide to choosing the right tools for your needs.
Spark Plug Sockets
Look for sockets with these key features:
- Proper fit - Usually 5/8" or 13/16" for most vehicles. Match the threads on your spark plugs.
- Depth - Long sockets to reach recessed plugs. Common lengths are 3", 6", 10".
- Gripping - Rubber inserts grip and remove stubborn plugs. Magnetic sockets prevent drops.
For example, the OEMTOOLS Z36R 10" long, 5/8" drive, rubber insert spark plug socket fits most domestic V8 engines.
Ignition Coil Sockets
Coil sockets come in common sizes like 14mm, 16mm. Measure your coils to get an exact match. Extensions help access hard to reach coils.
The Lisle 52800 extractor socket set covers coil packs from 12-18mm and works on many Honda, Toyota, GM and Chrysler engines.
Spark Plug Gapping Tools
Choose a gapping tool based on your preference and cost. Types include:
- Wire style - Simple, adjustable gap by bending wire.
- Blade style - More durable, often fixed gap sizes.
- Coin style - Easy flip action to specific gaps.
The OEMTOOLS 26241 blade style gapping tool provides preset gaps from 0.025"-0.080" covering most vehicles.
Ignition Pliers
Look for strong, gripped jaws to remove stubborn spark plug boots. Angled tools like the OTC 4521 provide better leverage in tight areas.
Torque Wrench
Torque spark plugs and ignition coils to spec using a quality torque wrench. Aim for +/- 4% accuracy like the CDI 1002CF3 click-style model.
Anti-Seize
Anti-seize lubricants like Permatex or Bosch prevent seizing during removal. It also improves torque accuracy.
Penetrating Oil
Sprays like WD-40 or PB Blaster can help loosen stuck plugs and coils when used properly.
Investing in the highest quality tools you can afford pays off over time with service life and reliability.
How to Choose the Right Spark Plug & Ignition Tools
Choosing the correct tools for spark plug and ignition service makes the job much simpler. Follow these tips to select tools tailored for your vehicle.
Spark Plug Sockets
- Measure spark plug thread diameter - Usually 5/8" or 13/16"
- Determine needed socket length - Longer for recessed plugs
- Pick rubber insert or magnetic - Grips plugs for removal
Ignition Coil Sockets
- Measure coil width - Sizes typically 12mm to 18mm
- Get appropriate drive size - 3/8" drive common for coil sockets
- Extensions help reach rear coils
Spark Plug Gapping Tools
- Check service manual for gap spec
- Choose style you prefer - Wire, blade, disc
- Pick gapping range to cover your spec
Ignition Pliers
- Insulated grip protects from shocks
- Angled head for better access in confined areas
Torque Wrench
- Drive size and torque range - 1/2" drive covers most plugs
- Accuracy within +/- 4% is ideal
- Adjustable with common torque spec settings
Using improper tools can damage components or lead to future problems. Investing in quality tools suited for your specific vehicle pays off in the long run.
