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How to Clean Ignition Coil?

Do you have a number of questions regarding how to clean ignition coil? From what tools you should use to the steps that are involved, we will go in-depth into the details so that you can stay confident in keeping your coils running in top condition. Endorsing the aspect of saving both time and money whilst ensuring effective results, our blog post offers detailed advice on cleaning an ignition coil safely and efficiently.

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How to Clean Ignition Coil?

Clearing up the ignition coil is essential for proper and efficient vehicle performance. As daunting as it may seem, cleaning the ignition coil might just be a minor hassle if you understand the process. With the right steps and materials, your car should be running smooth again in no time.

Tool you will need:

• 10mm Bolt Remover

• Air Intake Cleaner

• Small-Head Toothbrush

• Protective Gear (Gloves, Eyewear)

• Wrench

Step 1: Loosen the 10mm Bolts and Remove Wiring

Start by turning off your car and lifting the engine cover to locate the spark plug cylinders. Then you’ll want to unscrew the 10mm bolt using a wrench to remove the wiring from your ignition coil cylinder.

Step 2: Pull Out the Coil Pack Cylinder and Remove the Boot

After removing all the tools that secure it in place, you’ll need to carefully pull out the cylinder. You should be able to see the spark plugs as soon as its taken off. Now, if you want to access the ignition coil, twist off the boot cover of the cylinder with force and persistence. Underneath it lies a small spring strip and the ignition coil itself.

Step 3: Clean the Coil Using Air Intake Cleaner

If you’re looking for an affordable option to clean the coil, then you can use an air intake cleaner – costing only around $12! However, using the cleaner may require a lot of work, but will be worth the time and effort since it’ll flush out all the greasy debris caked inside. To make sure that you get rid of all the dirt and debris, brush away with a small head toothbrush.

Once done, simply follow the steps in reverse order to get your clean coil back into place and avoid any engine fires caused by rusting and breaking of the coils!

Related: Ignition Coil Replacement Cost

What are the symptoms of a dirty ignition coil?

How to Clean Ignition Coil 2
How to Clean Ignition Coil 2

If you experience any of the typical symptoms associated with a dirty ignition coil, it may be time to get it checked out. Look for signs like a decline in power, engine misfires and an irregular fuel economy when driving.

Poor acceleration, engine stalling and an unusual smell of gasoline are all signs that your ignition coil may need some attention. In rare instances, if the buildup is bad enough it could prevent your car from starting.

What type of cleaner should be used on an ignition coil?

When shopping for the right cleaner to use on your ignition coil, be sure to get one that is specialized for electronic components and won’t cause damage. Most automotive or electronic stores offer cleaners in spray cans that are specifically designed for cleaning electrical components. It’s important to not use any water-based products or abrasive detergents, as moisture can cause damage and harsh chemicals can permanently damage the ignition coil.

Why is it important to clean an ignition coil?

Overtime, dirt and debris can build up which causes a decrease in the flow of electricity and reduce the performance of the ignition system. Cleaning the ignition coil removes any built up contaminants which improves the flow of electricity allowing it to function as intended, thus restoring performance and improving engine efficiency.

Regularly cleaning the ignition coil also helps improve longevity, preventing premature failure and saving downtime and expense.

How often should an ignition coil be cleaned?

It is recommended to clean your ignition coil every 30,000 miles or once a year for a better overall vehicle performance. This helps prevent any further damage and gives the engine more power and efficiency when running. Keeping up with regular maintenance of your ignition coil can also help you save money on costly repairs in the future.

How to Clean Ignition Coil 2 (1)
How to Clean Ignition Coil 2 (1)

FAQs about How to Clean Ignition Coil?

What happens if ignition coil gets wet?

Are you noticing lurching or unsteady idling after a recent exposure to water? It could be that your ignition coil has become wet, causing the typical result of poor drivability and overall sluggish performance of your vehicle. This unwelcome exposure allows a thin film of water to act as an alternate electrical path, allowing the spark plug’s charge to travel down it instead and ultimately causing the car to act erratically.

Can oil damage ignition coil?

When it comes to purchasing a used car, one of the main worries is that it might have sustained some wear and tear that could cause future problems. One of these is oil leaking into the spark plug tube and around the ignition coil, which can be a real problem if not dealt with. If left too long, this can damage the spark plug and ignition coil completely, leading to a costly repair job.

Can you test an ignition coil with a multimeter?

The answer is yes! To do so, there are two circuits that require checking: primary and secondary. For the primary circuit, connect the multimeter to the negative and positive terminals of the ignition coil. If you get a reading of 0 ohms, it means that unfortunately the ignition coil has shorted and needs replacing.

Can you test ignition coil with spark tester?

Absolutely! With an OEM 25069 ignition spark tester, and a little bit of observation, it is possible to determine if the coil is firing or not. Alternatively, you could also remove the coil and then use a multimeter to test resistance. Both methods are easy to do and will save you time and money in the long run.


Thank you so much for taking the time to read our blog post on how to clean ignition coil.

By now, you know how vital it is to clean your ignition coil and keep it in top-notch condition. You understand the potential consequences of not doing so and have been informed about the steps involved in taking care of this part.

Cleaning your ignition coil regularly and using the appropriate cleaning products are important steps in ensuring that your car runs effectively and efficiently. With the help of this guide, you now have the information needed to take care of this essential part of your vehicle.

1 thought on “How to Clean Ignition Coil?”

  1. Here’s an improved and restructured version of the text:

    To clean oil from an ignition coil effectively, follow these steps:

    Disconnect the battery: This is a crucial safety measure to prevent electrical damage or the risk of shock. Ensure the battery is disconnected before proceeding.

    Remove the ignition coil: Typically located near the spark plugs in the engine bay, detach any clips or bolts securing the ignition coil.

    Clean the ignition coil: Begin by wiping off excess oil using a clean, dry rag or towel. Then, apply a generous amount of degreaser or engine cleaner, ensuring thorough coverage, including hard-to-reach areas. Allow the cleaner to penetrate for a few minutes.

    Scrub gently: Using a soft-bristled brush or toothbrush, scrub the ignition coil gently to eliminate any remaining oil and dirt. Avoid excessive force to prevent damage to delicate components.

    Rinse and dry: Thoroughly rinse the ignition coil with water, ensuring all traces of the cleaner are removed. Next, dry the ignition coil completely using a clean rag or towel.

    Reinstall the ignition coil: Once the ignition coil is clean and dry, securely reinstall it in the engine bay, ensuring all clips and bolts are firmly in place.

    Note: If the ignition coil is extensively damaged or has been submerged in oil, it may need to be replaced entirely.

    This revised version presents the steps in a more organized and engaging manner, making it easier to follow and understand.


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