Why Does My Leaf Blower Only Run On Full Choke?

If you have a leaf blower, then chances are that you’ve run into the frustrating problem of it only running on full choke. This can be especially frustrating in cold weather because it takes longer to warm up, and when your leaf blower sounds like it’s trying hard but just won’t turn over, you want answers. So why does this happen?

We will explore some common causes for why your leaf blower only runs on full choke and provide tips on how to troubleshoot and fix the issue so you can get back outside to tackle those pesky leaves.

Why Does My Leaf Blower Only Run On Full Choke?

A choke mechanism on gas-powered leaf blowers is intended to be utilized while cold starting a leaf blower. When a leaf blower’s choke is connected, the carburetor feeds more gasoline, making it simpler to restart the leaf blower engine.

However, it is not uncommon for a leaf blower to develop a problem in which it will only operate on a choke, and as soon as the choke is switched off, the leaf blower will either stop down or lose power.


  • Dirty Carburetor

One possible reason why your leaf blower only runs on full choke is that the carburetor might be dirty. Try cleaning the carburetor and see if that solves the problem.

  • Dirty Air Filter

Another possibility is that the air filter might be dirty. A clogged air filter can restrict airflow and cause the engine to run on full choke. Try cleaning or replacing the air filter and see if that makes a difference.

  • Not Enough Fuel

It’s also possible that there is something wrong with the fuel mixture. If the fuel mixture is too lean (not enough fuel), it can cause the engine to run on full choke. Try adjusting the fuel mixture and see if that helps.

  • Problem with Spark Plug

Finally, it could be that the spark plug is dirty or damaged. A dirty or damaged spark plug can prevent the engine from starting or cause it to run on full choke. Try cleaning or replacing the spark plug and see if that makes a difference.


You’ll need to clean or replace the carburetor, adjust the fuel mix, or replace the spark plug to fix the problem. We’ll show you how to do each of these things below.

  • Cleaning or Replacing the Carburetor

If your leaf blower’s carburetor is polluted, it won’t be able to mix the fuel and air properly. It will cause the engine to run roughly or not at all. To clean the carburetor, you’ll need to eradicate it from the engine and soak it in a cleaning solution. Once it’s clean, you can reinstall it and see if that fixes the problem.

If cleaning the carburetor doesn’t repair the issue, you may need to replace it. Carburetors are relatively inexpensive and easy to find online or in hardware stores. Replacing the carburetor should get your leaf blower running normally again.

  • Adjusting the Fuel Mix

If the fuel mix is too rich, meaning there is too much oil in it, this can cause the engine to run poorly or not at all. You’ll need to adjust the quantity of oil you’re adding to the fuel to fix this. Consult your leaf blower’s manual to find the correct oil-to-fuel ratio and mix the fuel accordingly.

  • Replacing the Spark Plug

If the spark plug is fouled, it won’t be able to create a spark and ignite the fuel. It will prevent the engine from running. You’ll need to remove the spark plug and clean it or replace it with a new one to fix this. You can find replacement spark plugs online or at a hardware store.

Once you’ve replaced the spark plug, try starting the leaf blower. If it still doesn’t start, there may be another issue causing the problem.

If none of these solutions solves the problem, you may need to take your leaf blower to a qualified repair person for further diagnosis.

Related Guide: How to Hang Leaf Blower in Garage?

Why Will, My Snow Blower, Only Run With The Choke On?

When you start a snowblower, you may notice that it only runs when the choke is on. There are a few explanations for why this may be the case. First, the choke helps restrict the airflow to the engine, making it stress-free to start. Once the engine is up and going, you may let off the choke, and the snowblower will continue to work.

Cold temperatures may necessitate the usage of the choke. By restricting the airflow, the choke helps to keep the engine warm so that it doesn’t stall. Finally, if your snowblower has an older machine, it may simply require the use of the choke to run properly

Possible Reasons:

  • Carburetor needs adjustment

Your snowblower might only run with the choke on because the carburetor needs to be adjusted. Over time, the carburetor can become out of sync, which will prevent the engine from running correctly. You’ll need to change the carburetor according to the builder’s instructions to fix this.

  • Blocked Fuel Line

Another reason your snowblower might only run with the choke on is that something is blocking the fuel line. It could be dirt, debris, or even ice. If something is blocking the fuel line, it will preclude fuel from getting to the engine. You’ll need to clean out the fuel line and make sure nothing is blocking it to fix this.

  • Problem with the Engine

Finally, it could be that the engine is not getting enough air. It could be due to a dirty air filter. If the air filter is dirty, it will restrict airflow to the engine and cause it to run poorly. You’ll need to clean or replace the air filter to fix this.

If your snowblower is still having problems, it’s best to take it to a mechanic. They can diagnose the problem and ensure that your snowblower is running correctly.

Related Guide: Can Leaf Blower Damaged Car?

Husqvarna Leaf Blower Only Runs On Half Choke

Husqvarna leaf blowers are some of the most powerful and popular on the market. It’s a backpack-style leaf blower that uses a battery-powered motor to create a high-powered air stream. You may then utilize this airstream for clearing leaves and other trash.

Husqvarna leaf blowers are available in various styles and sizes to suit your needs. No matter which model you choose, you can be sure that your Husqvarna leaf blower will quickly work on any yard cleanup project. 

Why does Husqvarna Leaf Blower Only Run On Half Choke?

If your Husqvarna leaf blower only runs on half choke, there are some potential causes. The most frequent cause is a dirty air filter. A dirty air filter can limit airflow to the engine, causing it to run on half choke. Another potential cause is a faulty spark plug.

A faulty spark plug can prevent the engine from getting enough spark, running on half choke. Finally, a clogged muffler can also cause the engine to run on half choke. If you’re not sure what’s causing your leaf blower to run on half choke, take it to a qualified technician for diagnosis and repair.

Does Carburetor Cleaner Work To Solve The Problem?

Yes, a carburetor cleaner will work to clean the carburetor and fix the problem in most cases. However, if the carburetor is especially dirty or damaged, it may need to be renovated or replaced.

How does carburetor cleaner work to solve the problem?

Carburetor cleaner contains chemicals that dissolve the dirt and debris that can clog the carburetor. Using carburetor cleaner to clean the carburetor allows the engine to run leaner (on less fuel). It can solve the problem of your leaf blower only running on full choke.

Here’s how to use carburetor cleaner to clean the carburetor on your leaf blower:

  1. Take out the air filter from the leaf blower. It will give you access to the carburetor.
  1. Spray carburetor cleaner into the carburetor opening. Be sure to spray generously so that the carburetor cleaner can reach all of the dirt and grime inside the carburetor.
  1. Allow the carburetor cleaner to sit for a few seconds to break down the dust and grime.
  1. Use a brush to scrub the inside of the carburetor. A toothbrush or other small brush will work well for this.
  1. Rinse the carburetor with clean water. Be sure to remove all carburetor cleaners before putting the air filter back on the leaf blower.
  1. Start the leaf blower and test it out. It should now be running correctly without any issues.

If your leaf blower is still not running correctly after cleaning the carburetor, it may need to be replaced.


One of the most often encountered issues with leaf blowers is that they won’t start without a choke. And nearly all of the time, the carburetor issues are to blame. Fortunately, leaf blower carburetors are not too complicated, and they may be easily repaired at home using the techniques described in this article.

Also Read:

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.

Write A Comment