Leaf blowers are a standard tool found in many homes and businesses. They can be used to quickly clear debris from a large area. But sometimes, the engine won’t start up no matter how many times you try. In some cases, this is due to a faulty ignition coil.

Over time, the ignition coil on a leaf blower may wear out and need to be replaced. This blog post will show you how to test the ignition coil on a leaf blower. We will also provide guidelines for swapping the ignition coil if necessary. Let’s get started!

What Is Ignition Coil?

The ignition coil is an integral part of a vehicle’s ignition system. It transforms the battery’s low voltage into the high voltage required to ignite the air/fuel mixture in the engine. 

The coil is made up of two primary windings and a secondary winding. The primary windings carry the battery’s low voltage and are typically made of copper wire. The secondary windings have many more turns of thinner wire and are wrapped around the primary windings. 

When the ignition switch is turned on, the battery’s current runs through the primary windings, creating a magnetic field. This magnetic field falls when the engine’s distributor points open, inducing a high voltage in the secondary windings.

This high voltage flows through the spark plug wires to the spark plugs, where it burns the air/fuel mixture.

How to Test Ignition Coil on Leaf Blower?

How to Test Ignition Coil on Leaf Blower?

If your leaf blower won’t start, a faulty ignition coil is one of the most likely culprits. Below we’ll show you how to test the ignition coil on your leaf blower to see if it’s a problem.

Step 1:

First, make sure that your leaf blower has fresh fuel and that the spark plug is clean and in good condition. Next, locate the ignition coil on your leaf blower. On most models, it will be located near the flywheel.

Step 2:

Once you’ve found the ignition coil, use a Multimeter to check it for continuity. If there is no continuity, the coil is likely defective and will need to be changed.

Step 3:

With a new or replacement ignition coil in hand, reassemble your leaf blower and try starting it again. If it still doesn’t start, then the problem may lie elsewhere. But if it starts, you know that the ignition coil was the reason!

How Do I Know If My Ignition Coil Is Working?

If your leaf blower has an ignition coil, it’s essential to know if it’s working correctly. Ignition coils are responsible for providing the spark that ignites the air/fuel mixture in the engine, so if they’re not working correctly, the engine won’t run. 

Here are a few practices you can tell if your ignition coil needs to be replaced:

  • The engine is misfiring

If your ignition coil fails, it may cause the engine to misfire. You may notice that the engine is running irregularly or skipping, and there may be a decrease in power.

  • The check engine light is on

If your leaf blower check engine light comes on, it could be due to a problem with the ignition coil.

  • The Leaf Blower is hard to start

If it’s taking longer than usual to get your blower started, or if it requires multiple attempts, this could be a sign that the ignition coil needs to be replaced.

If you’re experiencing any of these problems, it’s essential to have the ignition coil checked by a mechanic as soon as possible. Disregarding the problem could lead to added damage to the engine.

Also Read: Change Primer Bulb On Husqvarna 125b Blower

How Do You Know If Your Ignition Coil Is Bad On A Leaf Blower?

If your leaf blower won’t start, or if it starts but then stalls, the problem may be with the ignition coil. It is a crucial part of the engine, and if it’s not working correctly, the engine will not run. There are a few ways to state if your ignition coil is bad. 

First, check for visible damage. If the coil is cracked or broken, it will need replacement. With no visible damage, try testing the coil with a Multimeter. If the coil is not receiving enough power, it will need to be replaced. 

Finally, if the engine is still not running after checking and replacing the ignition coil, another issue with the engine may need to be addressed.

Steps To Check a Leaf Blower’s Coil:

  • Start by ensuring that the leaf blower is turned off and unplugged. You don’t want to start the leaf blower unintentionally while you’re working on it.
  • Remove the spark plug from the leaf blower. It will help prevent any accidental starting of the leaf blower while working on it.
  • Locate the coil on the leaf blower. The coil is usually located near the spark plug and will have two wires coming from it.
  • Use a Multimeter to test the resistance of the coil. To do this, touch one Multimeter lead to each of the terminals on the coil. The resistance should be between 0.5 and 2 ohms.
  • If the resistance is not within this range, the coil needs replacement.

Once you’ve confirmed that the coil is working properly, reattach the spark plug and carefully test the leaf blower to ensure it’s running correctly.

How Do You Test An Ignition Coil With A Multimeter?

To test an ignition coil on a leaf blower with a Multimeter, follow these steps:

  • Remove the spark plug and insert the Multimeter’s leads into the spark plug boot. You must confirm that the Multimeter sets to ohms mode.
  • Disconnect the leaf blower’s ignition coil wire from the spark plug with the engine off.
  • Touch the Multimeter’s red lead to the terminal on the ignition coil connected to the spark plug wire, and touch the black lead to the ground.
  • The Multimeter should read between 3,000 and 5,000 ohms if the coil functions correctly. The coil is most likely wrong and needs replacement if it reads outside this range.
  • Reconnect the ignition coil wire to the spark plug, and replace the spark plug. Test the leaf blower to make sure it is running correctly.

How Do You Test An Ignition Coil With A Screwdriver?

To check the ignition coil of a leaf blower with a screwdriver, you should follow the steps below:

Make Sure the Instructions Are Right:

Before you begin dismantling an engine, you need to have a basic understanding of how it works. Regardless of the kind of tool, this rule holds. You’ll have to look at various topics, such as the leaf blower’s specs. When dismantling a model, multiple techniques of handling are required.

Then Detach the Pieces:

The screws and nuts on the motor’s cowling (outside casing) should be removed using a screwdriver. Remove the protection and place it in a safe site. After removing the cover, you can see the flywheel and the ignition coil.

Disconnect the wire:

Now you can disconnect the plug at this point. A pair of pliers is handy to release the ignition coil mounting bolts afterward. 

These may be removed by unscrewing the tiny screws that line the region. The coil should be hanging freely when you’re finished, with nothing squeezing it.

Then remove the ignition coil:

After carefully removing the screws and bolts, the ignition coil can be taken off the bracket.

Check Your Ohmmeter or Multimeter:

To find out if your ohmmeter or Multimeter is working correctly, connect it to a power source and make sure that the leaf moves. Take care when doing this because otherwise, you might damage either device; always note which resistance indicates good functionality.

Observer the Reading:

When the ohmmeter showed “one,” there was no resistance. Furthermore, such an interpretation demonstrates the absence of any link. The link there suggests that the ignition coil isn’t functioning correctly.

Make a decision:

We performed this test to see whether the ignition coil was operating properly or not. What’s next now that you know whether the ignition coil is working or not?

You’ll have to buy a new ignition coil and install it if the ignition coil turns out to be the issue. Check compatibility before purchasing a leaf blower spare component.


So, if you have been having problems with starting your leaf blower, the process of testing the ignition coil may be just what you need. The step-by-step guide we’ve provided should help make this process easier for first-timers. 

Remember to be patient and take your time; it is better to do things correctly than do them hastily and make matters worse.

Victoria Peterson

I am a passionate gardener who wants to help you create and maintain your dream yard. I know that it can be daunting to take on a project like this, but I am here to help. I have been gardening for years and have learned a lot along the way. I want to share my knowledge with you and help you create the perfect yard for your home.

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