No Spark on Leaf Blower? 7 Easy Solutions!

Without a spark, the engine of the leaf blower will not start, making it impossible to use. This can be a frustrating and time-consuming problem, especially when trying to get yard work done.

There are several reasons that can cause a leaf blower to have no spark, such as a faulty ignition module, clogged air filter, or a malfunctioning spark plug. Sometimes, the problem can be as simple as a loose wire or a dirty spark arrestor.

In this article, the common causes of no spark on leaf blower will be discussed along with the steps that can be taken to fix the problem.

What Does a Spark Plug Do on A Leaf Blower?

An essential part of a leaf blower’s functionality is the spark plug. The spark that ignites the fuel mixture in the engine’s cylinder is produced by it. The power required to operate the blower is provided by this ignition.

Air and fuel combine to form the fuel mixture in the engine’s cylinder. The mixture receives a spark from the spark plug, which ignites and burns it.

The tremendous pressure produced by the quick combustion forces the piston downward, turning the crankshaft and powering the blower’s fan.

7 Reasons of No Spark on Leaf Blower (Easy Fixes Included)

Here is a list of causes and solutions of a leaf blower with no spark. It’s important to remember that these are common causes and other factors may also be involved.

1. Faulty Ignition Module

The ignition module is responsible for creating the spark that starts the engine on a leaf blower. A faulty ignition module can cause a lack of spark, preventing the engine from starting.

The Fix

To fix a faulty ignition module, you will need to first locate the module on your leaf blower. If it’s faulty it can cause no spark. The first step is to locate the module on your leaf blower, consult the user manual for its location.

Once located, you can test the module using a multimeter to check if it is functioning properly. If it is not, you will need to replace the module.

2. Clogged Air Filter

A clogged air filter can restrict the flow of air to the engine, causing a lack of spark and preventing the engine from starting.

The Fix

To fix a clogged air filter, you will need to remove the air filter from the leaf blower and clean it. If the filter is damaged, you will need to replace it.

Now, remove the air filter and clean it with soap and water. If the filter is damaged, replace it with a new one. It’s important to check and clean or replace the air filter regularly to prevent clogging.

3. Malfunctioning Spark Plug

A spark plug is responsible for creating the spark that ignites the fuel in the engine. A malfunctioning spark plug can cause a lack of spark, preventing the engine from starting.

The Fix

The spark plug is typically located near the top of the engine, and may be covered by a protective cover. Use a spark plug wrench or a socket wrench to remove the spark plug from the engine.

Inspect the spark plug for any damage or wear, such as a cracked porcelain insulator, a fouled electrode, or a worn center electrode.

If the spark plug is damaged or worn, replace it with a new one that is the same size and type as the original. Do not over tighten the spark plug, as this can cause damage.

4. Dirty Spark Arrestor

A spark arrestor is a device that prevents sparks from exiting the exhaust, it could be clogged which can cause a lack of spark.

The Fix

The spark arrestor is typically located on the muffler. Use a screwdriver or a socket wrench to remove the spark arrestor from the muffler. Inspect the spark arrestor for any damage or clogging.

If it’s clogged with debris, use a wire brush or a small tool to remove the debris. If the spark arrestor is dirty, clean it with a wire brush or a small tool.

If the spark arrestor is damaged or cannot be cleaned, replace it with a new one.

5. Loose or Dirty Wires

Loose or dirty wires can prevent the spark from reaching the spark plug, causing a lack of spark and preventing the engine from starting.

The Fix

The wires are located near the spark plug and the ignition module. Carefully inspect the wires for any damage, such as frayed insulation, broken strands, or corrosion.

Also, check if they are dirty, as dirt and debris can cause poor connections. If any of the wires are loose, secure them by attaching them to their proper connections.

If the wires are dirty, clean them using a wire brush or a small tool.

6. Fuel Issues

Lack of fuel or old fuel may also cause no spark issues. A clogged fuel filter can restrict fuel flow and cause a lack of power or poor performance. Old or contaminated fuel can cause poor performance or even damage to the engine.

Locate the fuel tank on your leaf blower and check the fuel level. If the fuel level is low, add fresh fuel to the tank. If the fuel is old or contaminated, drain it from the tank and add fresh fuel.

Inspect the fuel to ensure that it is fresh and not old or contaminated. Inspect the fuel filter to ensure that it is clean and not clogged. If the fuel filter is dirty or clogged, replace it with a new one.

7. Battery Issues

A weak or dead battery can prevent the ignition module from creating a spark, causing the engine to not start. Loose or dirty connections can prevent the battery from charging or providing power to the leaf blower.

The Fix

First of all, check the battery level. If the battery level is low, charge or replace the battery. Inspect the battery connections to ensure that they are secure.

Also clean the battery connections and terminals. If the battery is weak or dead, replace it with a new one with the same power.

How to Maintain a Spark Plug on a Leaf Blower?

Here are some methods to maintain and prolong the life of a spark plug:   

1. Adjusting the gap: The gap is the distance between the center electrode and the ground electrode of the spark plug. You can check the gap by using a gap gauge, if it’s too wide or too narrow, you can adjust it with a feeler gauge.

• Using a spark plug tester: A spark plug tester can help to determine if the spark plug is functioning properly, by connecting it to the spark plug and checking for a spark.

• Using an anti-seize lubricant: Applying a small amount of anti-seize lubricant to the threads of the spark plug can help to prevent seizing and make it easier to remove.

Frequently Asked Questions (FAQs)