If your leaf blower is smoking, you’re likely wondering why it’s doing that and what you can do about it. This guide will explain the possible causes of smoke from a leaf blower and how to troubleshoot them.

We’ll also provide some tips for cleaning and maintaining your leaf blower to help prevent smoke from appearing in the future.

Is It Normal For A Leaf Blower To Smoke?

Gardening enthusiasts know that a leaf blower is an important tool for maintaining the neatness of their yard. However, it is normal to see smoke coming out from your leaf blower due to burning oil and gas as well as buildup in the impeller.

To sustain its longevity and help avoid this issue, be sure to clean the impeller regularly and check if there’s enough oil included with your model! With proper care, you can enjoy years of stress-free gardening experience while making use of your trusty leaf blower.

Why Is My Leaf Blower Smoking? – Reasons & Solutions

Why Is My Leaf Blower Smoking?

If your leaf blower is smoking, it could be several reasons. The most common reason is that the engine is overheating. It can happen if the leaf blower is used for extended periods or used in an area that is not well-ventilated. 

Other reasons why a leaf blower may smoke include a clogged air filter, spark arrestor, or a problem with the fuel mixture. If your leaf blower is smoking, try troubleshooting the issue to identify the cause.


  • Overheating

One of the main reasons for producing smoke is overheating of the engine. If your leaf blower’s engine is overheating, it will likely have white smoke. This type of smoke is typically caused by too much heat build-up in the engine. 

  • Clogged Air Filter or Spark Arrestor

If your leaf blower’s air filter or spark arrestor is clogged, it can cause the engine to smoke. A clogged air filter will restrict airflow to the engine, causing it to run hotter than usual. A clogged spark arrestor can cause the engine to backfire, which can also cause smoking. 

  • Fuel Mixture Problem

If the fuel mixture in your leaf blower is too rich, it can cause the engine to smoke. A fuel mixture that is too rich will have too much oil and can cause the engine to run hotter than usual. 

  • Problems with Sealing

Another reason for the smoke is leaf blower engine seal failures on the internal level. These problems often appear around the crankcase’s two ends, where the sealing is most vulnerable. There may be issues if the airtight seals in such places have been compromised or destroyed. The crankcase may catch fire if a bit of quantity of gasoline gets into it.


  • Cleaning a filthy muffler

Remove the spark arrestor screen to see whether the muffler is clogged. Remove the muffler cover after that. If the components are coated with black carbon deposits, use a brush and mild detergent to clean them.

  • Adjust Fuel Mixture

One of the main reasons for the smoking problem is the wrong mixture of fuel. To fix this problem, adjust the fuel mixture to contain less oil. Be sure to read the leaf blower’s owner’s manual to find the correct fuel mixture for your model.

  • Clean Air Filter

To clean a clogged air filter, remove it from the leaf blower and wash it with soap and water. Allow the filter to dry completely before reinstalling it. To clean a clogged spark arrestor, remove it from the leaf blower and brush away any debris blocking the screen.

  • Prevent Overheating

To prevent overheating, take breaks when using the leaf blower and avoid using it in enclosed spaces. If the engine does overheat, allow it to cool down before using it.

  • Replacing the Carburetor

If you discover that your carburetor is the cause of your engine smoking, you may opt to either replace or rebuild it. In most cases, it’s simpler and less costly to replace the old one. Change your carburetor by following these instructions:

  • Turn off the gasoline supply.
  • Remove the air filtration.
  • Disconnect the airbox.
  • Removing the fuel lines when installing a new carburetor, keep in mind how they were set so that you don’t miss them out.
  • Replace the carburetor if necessary.
  • In reverse order, put everything back together.
  • After this treatment, your engine should be in perfect operating condition.

Related Guide: How Long Should Leaf Blower Last?

Is Smoking Coming from My Leaf Blower a Concern?

It would help if you were alarmed when you saw smoke coming from your leaf blower. It’s a sign of mechanical problems that need to be addressed. Seeing smoke coming from your car’s engine is not something to ignore.

If, for example, a gasoline leak is to blame for the smoke, it might result in a disastrous explosion of fire danger.

Switching off the engine is the first thing you should do if you detect smoke coming from your blower.

After that, go over the list of probable reasons provided above to see if you can narrow down the source of the issue. It’s best to solve the problem before using it again.

Why is My Leaf Blower Blowing Blue Smoke?

There are a few potential reasons why your leaf blower may be blowing blue smoke. One possibility is that the engine is running too hot and is burning oil. A lack of air supply or clogged spark plugs might cause the engine to overheat. If this is the situation, you’ll need to have the engine serviced.

Another likelihood is that there’s something erroneous with the fuel mixture. If it’s too rich, it can cause blue smoke. You must adjust the carburetor or use a different fuel type.

Finally, there’s also likely an issue with the exhaust system. If it’s restricted, it can cause blue smoke. You’ll need to have the system examined and repaired if necessary.

If you’re still having trouble, it’s best to take the leaf blower to a qualified technician for further diagnosis. They can pinpoint the problem and get it fixed so you can get back to blowing leaves.

Why is My Leaf Blower Blowing White Smoke?

If your lawn leaf blower emits white smoke, it’s most likely due to excess fuel burning. It is usually a straightforward issue to resolve – let the smoke burn off the extra oil.

However, if the white smoke is continual, it may be due to an air leak in the crankcase. To check for this, examine the crankcase and look for any cracks or gaps. Seal it up with a suitable adhesive or sealant if you find an air leak.

Once you’ve resolved the issue of white smoke, check the oil level regularly to avoid overfilling in the future.

How Do I Stop My Leaf Blower From Smoking?

There are several reasons why your leaf blower produces white smoke. Some of the reasons are:

  • Check the Air Filter and Replace It If Necessary:

One of the most common causes of a smoking leaf blower is a dirty air filter. If your air filter is clogged, it can restrict airflow to the engine, causing it to run hotter and smoke. Inspect your air filter and clean or replace it if necessary.

  • Clean Out The Engine:

If there is a build-up of debris in the engine, it can cause the leaf blower to smoke. Try consuming compressed air to blow out any dirt or debris that may be lodged in the engine.

  • Replace spark plugs:

Another possible cause of a smoking leaf blower is old or fouled spark plugs. There might be an issue with your blower ignition system if your spark plugs have worn out, which can cause the engine to run hotter and smoke. Try replacing the spark plugs and see if that fixes the problem.

  • Service the Muffler:

If your leaf blower has a damaged or clogged muffler, it can cause the engine to smoke. Has a qualified mechanic serviced the muffler to see if that fixes the problem?

  • Check for Other Problems:

There may be other underlying problems causing your leaf blower to smoke. If you’ve tried all of the above solutions and the problem persists, take your leaf blower to a qualified technician to diagnose and fix the issue.

Can A Blower Motor Cause A Fire?

We use blower motors in various applications, including furnaces, air conditioners, and hair dryers. They can overheat if they are not correctly maintained or misused. Overheating can damage the motor, which can lead to a fire. The fire can spread quickly, and it may not be easy to extinguish.

You can prevent your blower motor from overheating by ensuring it is properly maintained. You should also follow the manufacturer’s instructions for using the blower motor. If you think that your blower motor is causing a fire, you should call the fire department immediately.


Leaf blowers tend to break more often since they are so sensitive. For a leaf blower, smoking is a regular source of frustration. It’s possible to fix this problem, but it will take time.

We’ve collected all the relevant data on how to solve a leaf blower’s smoke problem and presented it to you in the most straightforward style possible. We are sure that it will be an excellent assistance.

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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