Skip to Content

6 causes for a smoking leaf blower, and how to fix it

Leaf blowers are one of the most efficient tools ever built. They are portable and have two kinds: fuel-powered and electric. The fuel-powered leaf blowers either have a two-stroke engine or a four-stroke engine. Now even though this tool is efficient and useful, it has its problems that you might face throughout its lifetime.

Some of the most common problems found in the leaf blowers are smoking, rust, engine failure, damaged filter, and much more. There are many things that you have to consider while working and maintaining a leaf blower.

Leaf blowers are great efficient tools, but they can be easily damaged. There are many reasons why your leaf blower might start to smoke. Some of the major causes are mixing improper oil or lubricant with the gas, having a really dirty filter, the jets getting clogged, etc.

The main 6 causes for a smoking leaf blower are:

  • Cylinder Issues
  • The carburetor
  • Low-Quality Air-fuel Mixture
  • Used-up Muffler
  • Fuel Leaking From the Fuel Tank
  • Smoking Due To Improper Sealing

These causes can create a serious problem for your leaf blower. This is why you must always know how to maintain and clean your leaf blower properly.

Cleaning and maintaining a leaf blower is pretty simple if you go through and follow this guide properly. In this blog post, I will discuss 5 different reasons why your leaf blower can start to smoke and how you can fix them all by yourself.

To do so, you must have proper knowledge about the whole machine and its parts first. Then you can engage yourself in the process of identifying and dealing with the causes of smoking. So let us get right into it.

Contents

Different types of smoke

Your leaf blower may blow different types of smoke depending on the component which is damaged. There are different reasons behind the color of the smoke. Below, there is a detailed discussion about them. For the people who do not have the patience to go through all those details, here is a quick list of the different types of smoke and their causes.

How to fix it?
The cause of the smoke
How to fix it?
Blue Smoke
If your leaf blower is blowing blue smoke it indicates that one of the important components of your leaf blower is damaged in some way. It could be the carburetor or air filter.
Check and clean the carburetor or air filter
White smoke
If your leaf blower blows out white smoke when it is started and the smoke disappears after the engine runs for a few seconds it indicates that the piston rings could be damaged or clogged. This is usually as a result of carbon deposits on them
Clean the Piston rings. These are very easy to clean.
Black smoke
Black smoke indicates that the air filter or the carburetor jet is damaged or clogged
Air filter or carburetor jet needs to be cleaned or replaced.

If you have read the chart with patience, then I can say that you now have a piece of proper knowledge about the most popularly sold and bought leaf blowers in the market. All leaf blowers have different advantages and disadvantages. So when you buy a leaf blower, it will have a positive quality and at least one or two drawbacks you have to accept.

5 Common Causes a Smoking Leaf Blower

● Cylinder Issues

The chamber in your leaf blower houses the cylinder and allows it to operate optimally. If you notice that your leaf blower is producing white smoke, there could be an issue inside the chamber. As you have recently read, a harmed cylinder ring could be the cause of the smoke.

The cylinder rings make a seal to the chamber divider to contain the ignition gasses and create the chamber’s pressure that makes the motor work. The rings and the chamber join to frame this seal. The ring does not contact the chamber; rather, a slight film of oil isolates it.

The rings and the chamber can be harmed either by soil (which acts like sandpaper, wearing the ring and chamber) or by the absence of oil (which permits the metal ring to meet the metal chamber, causing an annoying noise as the metals grind against each other). When this harm has happened, the hole between the ring and the chamber is expanded. This allows excess oil into the ignition chamber, and it can release a lot of white smoke.

The pressure is additionally lost, and this can cause decreased motor performance. If your leaf blower is emitting dark smoke rather than white, it tends to be characteristic of a different smoke.

● Carburetor:

The carburetor won’t cause white smoke to originate from within, but it can be an indirect cause. One reason for white smoke is an excessive amount of oil in the fuel of a 2-cycle motor. If there is a lot of oil in the fuel, it will be in the general pool and collected in different motor areas.

One of these is frequently the carburetor. The carb unit comprises the parts expected to modify the carburetor, for example, the stomach, reed valves, gaskets, and the metering needle.

● Low-Quality Air-fuel Mixture

A typical and straightforward cause that may make a leaf blower smoke is improperly blended fuel. Gas-powered leaf blowers utilize a pre-blended fuel that brings gas to the two-stroke motor oil. These two are mixed at a proportion as indicated by the manufacturer’s specifications.

You must follow them carefully otherwise the fuel will be consumed disproportionally inside the chamber, which causes the motor to smoke. You must drain out any old or inadequately blended gas and re-mix some new fuel, following the blending guidelines carefully.

● Used-up Muffler

As the leaf blower motor warms up, warmed gasses need to vent out of the motor to keep it running. These vented gasses pass through the fumes port and suppressor, and a little layer of carbon will slowly develop along with the suppressor dividers and fumes port as the gases exit the motor. Take the spread off the suppressor and unscrew the flash arrestor screen.

If these parts are canvassed in dark carbon deposits, you must clean them with a brush and a mild cleanser.

● Fuel Leaking From the Fuel Tank

The fuel framework needs a perfectly sealed set up to keep the fuel streaming into the chamber. Sometimes an air spill occurs someplace around the carburetor. A modest quantity of fuel can trickle out of the framework. If this fuel hits the warmed motor, it causes smoking close to the carburetor.

Normally, these holes happen around the fuel hoses and elbow connectors on the carburetor. Another regular spilling site to check is the gasket over the admission unit.

● Difficulties Due To Improper Sealing

There is one more common problem with the motor of your leaf blower that causes smoking. It happens around the seals on the two sides of the crankcase. When this happens, a limited quantity of fuel may enter the crankcase and wreck inside.

Fixing this problem requires splitting the crankcase into its two separate parts and supplanting the seals on the two sides. You may also need to check the rings and seals on the cylinder and chamber for spills.

Fix a Smoking Leaf Blower

There are 5 main causes behind a smoking leaf blower and there are different fixes for different situations. You can try the maintenance yourself in some cases. But for more complicated problems, you should call a reliable mechanic.

Adding a lot of 2-cycle oil with the gas can cause smoke from the leaf blower’s motor; follow the rules in your manual for adding fuel and 2-cycle oil. Most leafblower motors utilize a 40:1 proportion of gas to 2-cycle oil. To accomplish that blend, include a 3.2-oz container of 2-cycle motor oil to 1 gallon of gas.

A clogged air channel can also cause the motor to smoke. It can happen if the channel keeps the carburetor from getting enough air to make the correct fuel/air blend. A fuel-rich blend can also make the motor smoke.

You must clean the air channel and perform maintenance so the motor will not turn over even though there is fuel in the tank. The carburetor can also be the cause.

Clogged jets inside the carburetor can cause smoking when it cannot blend the perfect measure of air with the fuel. You may need to revamp or replace the leafblower’s carburetor.

Replacing The Carburettor of Your Leaf Blower

The leafblower’s carburetor blends air and fuel to the best possible extents to make a flammable gas. If the motor turns over and, at that point sputters, or does not start at all because of the absence of fuel, you may need to replace the carburetor. It is affordable to replace the carburetor instead of reconstructing it.

How To Replace The Carburetor

This DIY fix shows the best way to replace and maintain a carburetor in a leaf blower correctly. The carburetor blends fuel and air to the right extent with the goal that the total fitting can ignite the mixture inside the chamber, thereby driving the motor. If the leafblower motor doesn’t turn over even though there’s fuel in the tank, the carburetor could be the issue.

You could reconstruct the carburetor, utilizing a nicely endorsed new part.

You can follow this procedure to replace the carburetor on basic Weed Eater, Husqvarna, Poulan leaf, Craftsman, Troybilt, and MTD leaf blowers.

You can find Leaf Blower Carburetors here.

● Step 1: Disconnect The Fuel Supply

To replace the carburetor, start with draining the fuel tank completely. No fuel should be left in the tank for safety measures. To further ensure safety, you must take off the spark plug cord and disconnect it so that the engine does not start running.

● Step 2: Removing The Air Filter

The air filter cover is attached with screws. You must remove them carefully and place them near you. After that, you must remove the cover of the air filter.

The carburetor should be easily accessible now.

● Step 3: Air Box Removal

Now you must remove the screws of the carburetor. The airbox should be located in the middle section. Then you should remove its attachment with the choke and throttle by pulling out the airbox.

● Step 4: Removing Fuel Lines

The configuration of the fuel lines is very important. You must keep checking these regularly and remember or record them for when you would need to install the new one. After you completely figure out which line goes where you must start by removing the larger fuel lines and move to the smaller ones later.

● Step 5: Installing New Carburettor

To install the new one, you must start by attaching the fuel lines. Then you should find a suitable position in the airbox and attach the carburetor inside it.

You can find Leaf Blower Carburetors here.

● Step 6: Putting Everything Back Together

After that, you should reattach the airbox cover by adjusting the choke and lever. When the positioning is done, you must attach the screws in the correct sequence and make sure they are tightly fit. Finally, you can finish by connecting the spark plug and filling up the fuel tank.

Rebuilding the Carburetor

The leaf blower carburetor blends air and fuel to the best possible extent to make an ignitable gas. If your leaf blower’s motor turns over and, at that point sputters, or does not start at all because of the absence of fuel, you can modify the carburetor. Remake packs are available for most carburetors and contain basic parts for modifying a leafblower carburetor, for example, stomachs, seals, and gaskets.

You can sometimes fix a fuel supply issue by disassembling and cleaning a carburetor. It would help if you utilized the pack to remake the carburetor in the wake of cleaning it.

The carburetor blends fuel and air in the right extents so the flash fitting can touch off the blend inside the chamber, controlling the motor. If the leafblower motor does not turn over even though there is enough fuel in the tank, then the carburetor is probably the actual problem. You must follow these guidelines to remake a carburetor.

Here’s how you can rebuild the carburetor on your own!

● Step 1: Pulling All Connections

In a well-ventilated area, you must carefully evacuate the fuel top and empty the fuel tank into an affirmed stockpiling holder. You should then separate the flash attachment wire. Then you should undo the screws from the air channel spread.

● Step 2: Removing Air Filter

Take off the carburetor mounting screws. Pull the airbox out and discharge it from the carburetor throttle and stifle switches. Observe the setup of the small and big fuel lines on the carburetor.

Remove the fuel lines from the carburetor. Dispose of the carburetor.

● Step 3: Get Top Spread Off

Remove the top spread with the preliminary bulb from the carburetor. Get the groundwork bulb from the top spread. Unscrew the gasket and stomach from the top spread.

Replace the groundwork bulb. Use a screwdriver to undo the screws from the base front of the carburetor.

● Step 4: Removing The Base

Expel the base spread. Separate the base spread and the stomach. On the carburetor base, note how the switch, spring, and pivot pin fit together. Remove the screw and pull those segments out of the carburetor.

● Step 5: Cleaning The Parts

Clean all parts and streams in the carburetor body with an airborne carburetor cleaner and packed air. It would be best if you allowed the carburetor to dry out completely.

You can find carburetor cleaner here.

● Step 6: Putting Things Together

Finally, you should introduce the needle, switch on the carburetor base, and screw them into their proper place. Next, you should introduce the gasket, stomach and spread, in a specific order. Then you should introduce the top spread and groundwork bulb.

You must then fix the fuel lines onto the carburetor. You can now place the carburetor into the airbox with the throttle and stifle switches situated appropriately.

Position the carburetor on the motor and reinstall the mounting screws. Then you must position the air channel and spread over the carburetor, and finally, you can secure it with the mounting screws.

Final Thoughts

As leafblowers are delicate machines, they tend to get wrecked more often. Smoking is a common problem for a leafblower. But with proper care and maintenance, this problem can be resolved with minimum effort and time.

We have gathered all the information regarding the proper fixes related to a leafblower’s smoking and guided you in the simplest possible way. We are fully confident it will help!

The Understated Risks of Damaging Leaf Blowers

Operating a leaf blower comes with an opaque understanding of the types of damage that can occur. For instance, one such damage is the risk of an engine dying, which can generally be attributed to a myriad of aspects such as a dirty air filter or a spark plug that’s worn out. Another instance is overheating.

Just like any machine, heavy and consistent use of a leaf blower can lead to overheating, thereby leading to significant damage. The latter often presents as a smoking engine, stalling or lack of power.

Thus, recognizing these preventative maintenance practices is essential(1), as is understanding what factors might cause such problems.

• The Importance and Procedure of Cleaning Leaf Blower

It is a no-brainer that just like your automobile, your leaf blower requires regular maintenance to ensure the longevity of its life. One of the most common yet overlooked maintenance practices is cleaning the air filter. However, this alone won’t suffice the maintenance needs of your leaf blower.

You need to extend the cleaning routine to other parts like the fan blades, debris bag, and handle controls. Believe it or not, a cleaned machine performs far better and for an extended period than one laden with dirt (2).

• Understanding and Avoiding Leaf Blower Smoking Issues

There are several potential adverse effects of a smoking leaf blower. For one, the performance of the machine may be reduced due to damaged parts or clogged mechanisms.

Not only is your leaf blower less efficient, but smoking also signals a potentially more severe problem, like leaking oil or a damaged engine. Plus, it can lead to a damaged carburetor or impede the functionality of the exhaust (3).

• Adhering to Safety Measures while Handling Leaf Blowers

When handling any machinery, your safety should be paramount. For a leaf blower, taking safety precautions goes beyond wearing protective gear but encompasses a deep-seated understanding of the necessary care.

A critical precaution is ensuring the machine is switched off before attempting any repairs or maintenance procedures. This simple step can be the difference between a successful repair and a tragic accident. In addition, it’s advisable to follow the manufacturer’s safety guidelines to avoid any unnecessary risks (4).

• References

  1. Preventative Maintenance Practices for Leaf Blowers
  2. The Importance of Cleaning Your Leaf Blower
  3. Potential Effects of a Smoking Leaf Blower
  4. Safety Guidelines for Handling Leaf Blowers

– Identifying the Cause of Smoke Color

Blue or white smoke from your leaf blower is typically a telltale sign of extra burning oil within the device. Conversely, black smoke emanates from an imbalance in the fuel and air ratios. When you’re aware of what each different color of the smoke signifies, it becomes easier to diagnose the potential issue and work towards resolving it.

– Dealing with Excess Oil Issues

When excess oil is at the root of the problematic smoke, allow the leaf blower to run continuously until all the oil has been burnt off. This is usually an easy and straightforward fix that requires no additional supplies.

If the fuel mix ratio appears off, make adjustments as per the manufacturer’s instructions. Also, if the fuel is old or seems contaminated, replace it immediately. I highly recommend regular checks and periodic replacements of your leaf blower’s fuel for optimal performance.

– Addressing Crankcase Sealing Damage

Crankcase sealing damage could also be a culprit behind the issue. Essentially, break down the crankcase into two separate parts for closer inspection of the cylinder and piston rings. Detailed examination can expose deformities or damages that need to be addressed before further use of the leaf blower.

– Checking and Fixing Fuel Tanks

Leaks in the fuel tanks can also cause smoke issues in your leaf blower. Regularly perform checks for leaks and immediately repair or replace damaged parts once discovered. The Environmental Protection Agency’s advice is crucial in ensuring the secure disposal of replaced tank parts of your leaf blower.

– Cleaning the Muffler

A dirty muffler may lead to unwanted smoke production. You can easily clean it with soapy water and a cloth. For stubborn dirt, use a brush or degreaser. Regular cleaning of the muffler ensures the overall health of your leaf blower. The regular maintenance of the muffler helps in extending the lifespan of your leaf blower.

– Handling Cylinder Damage

Cylinder damage can lead to impaired performance and excessive smoke. Inspect, clean, and lubricate the cylinder before operating the leaf blower. This practice ensures the maximum efficiency of your leaf blower.

– Resolving Carburetor Issues

Issues with the carburetor can be systematically solved by following step-by-step instructions on replacing and rebuilding it. A well-maintained carburetor influences the performance of your leaf blower significantly.

– Dealing with Damaged Piston Ring

If you find any damage to the piston ring, replace it immediately. Also, clean or replace any carbon deposits in the area. This repair can greatly increase the lifespan of the leaf blower and improve overall operations. Always remember a well-performing leaf blower offers the convenience of quick and efficient yard cleanups.

– Consult Your Owner’s Manual

As a seasoned blower technician, what I recommend as the first step is to consult your owner’s manual. The manual provides specific repair instructions tailored to your blower’s make and model. It presents an understanding of its unique components and their functionalities. You can enhance your knowledge regarding your blower here.

Importance of High-Quality Parts

The selection of high-quality parts is absolutely essential. These replacement parts should be compatible with your blower model. Compatibility ensures optimal performance and longevity of your blower.

• Disconnect Blower from Power Source

For safety, it’s imperative to disconnect the blower from any power source. Let it cool down before disassembling or handling any components. This is a prudent and necessary safety measure.

• Disassembly of the Blower

Next, turn to your blower’s disassembly. Your manual comes in handy here, providing detailed instructions. You need to be attentive and careful during this stage to access the cylinder and piston rings.

• Replacement of Damaged Parts

Once you have taken the blower apart, it’s time to inspect the internals. This is when you carefully remove damaged parts and replace them with new ones. Always adhere to correct assembly sequences as per your manual.

• Inspect Coolant System

Following parts replacement, inspecting the coolant system is vital. Check thoroughly for leaks and repair or replace damaged components as necessary. A fully functional coolant system contributes to the effective operation of your blower.

• Considering Head Gasket Replacement

A persistent coolant leak could point out a fault in the head gasket. It’s advisable to consider replacing the head gasket in such cases. However, ensure that this is the culprit before proceeding with the replacement.

• Reassemble the Blower

Once the repairs and replacements are done, it’s time to reassemble the blower. Adequate caution and meticulousness are demanded at this stage. Make sure all connections are properly secured.

• Testing the Blower

The final step is to test your blower. Start it up and check whether all components are working optimally. This will confirm whether the issue has been resolved.

Visit this non-commercial link to understand more about the energy consumption of different types of blowers and their maintenance.

This journey of repairing your blower not only boosts its lifespan but also enriches your understanding. However, always remember that every step in this process is significant.

From consulting your manual to replacing parts and testing, each contributes towards the effective functioning of your blower. And that’s essential knowledge you’ll want to have as a blower owner.

Why Smoking in A Leaf Blower is a Serious Issue

Smoking in a leaf blower is an indicator of underlying issues that need immediate attention. Its occurrence should not be overlooked as it may lead to severe damage to the engine.

This article will talk about the potential reasons for your leaf blower to smoke, along with specific suggestions to address each.

• The Damage Smoking Can Cause to the Leaf Blower Engine

The implication of ignoring smoking in a leaf blower goes beyond the inconvenience. Persistent smoking can cause serious harm to the engine.

This study by the National Park Service highlights how continuous emission of smoke can degrade the internal components (like combustion chamber, valves etc.) of an engine over time.

• The Role of Improperly Mixed Fuel in Leaf Blower Smoking

One of the common reasons for a leaf blower to smoke is improperly mixed fuel. The leaf blower uses a mixture of gasoline and oil in a specific ratio for smooth operation.

Any kind of imbalance can cause the machine to smoke. So, it’s essential to carefully measure out the correct portions of oil and gasoline while preparing the fuel mixture.

• Dirty Mufflers Can Lead to Leaf Blower Smoking

A dirty muffler is another common reason for your leaf blower to emit smoke. The build-up in your muffler can block the escape route for gases, leading to back pressure in the combustion chamber.

This back pressure can then cause the leaf blower to produce excessive amounts of smoke. A routine check and cleaning of the muffler should help prevent this.

• How Fuel Leaks Lead to Leaf Blower Smoking

Fuel leaks, if left unnoticed and unaddressed, can cause the leaf blower to smoke excessively. A fuel leak tends to destabilize the ratio of air and fuel, skewing the functionality of the engine.

This can then result in visible smoke. Therefore, always be vigilant for any signs of fuel leakage and address them immediately.

• Sealing Problems and Leaf Blower Smoking

If your leaf blower has sealing problems within the engine, it might start smoking. Improper or eroded seals can allow oil to enter the combustion chamber. This leads to the burning of the oil, subsequently producing smoke. Regular checks on engine seals and timely replacements can help avoid this issue.

• Restoring the Leaf Blower to Proper Functioning

Addressing the above-mentioned issues appropriately can save your leaf blower from unwanted damage. Regular maintenance is key to ensuring that your leaf blower functions optimally. This way, you can catch minor issues before they escalate into major ones, which might require costly repairs or replacements.

Consider investing in a leaf blower maintenance kit to keep it in top shape. Buying genuine parts for replacements, using the right ratio of fuel, regularly cleaning the muffler, and sealing off any leaks can make a significant difference.

Quick action and maintenance can save your leaf blower from severe damage and can let it serve you over the years efficiently. Whether it’s gardening, clearing leaves in the autumn, or light snow removal, a well-kept leaf blower will never let you down.

• Leaf Blowers: A Potential Fire Hazard

Leaf blowers, though useful, may pose potential fire hazards if they are not properly maintained. The frequency of loss or danger due to leaf blower-related fires may be shocking to many. Therefore, every leaf blower user must understand how to prevent such an instance from occurring in their own backyard.

– The Issue With Electric Leaf Blowers

Take, for instance, electric leaf blowers. These gadgets have been known to overheat and catch fire. The company, Homelite, experienced this issue firsthand when they had to recall their electric leaf blowers. This recall was a clear and crucial signal that not all electric leaf blowers are faultless.

In fact, the United States Consumer Product Safety Commission CPSC documents a recall case of the Homelite electric leaf blowers. The blowers were recalled due to overheating problems. When any electrical equipment begins to overheat, it becomes a clear fire risk.

– Identifying a Smoking Issue

Indicators of potential problems with your leaf blower might be more apparent than you’d expect. If you see excessive smoke emitting from your machine, there are inherent problems that need to be addressed. Don’t ignore this red flag. Switch off your leaf blower at once.

Avoid restarting your leaf blower without identifying and resolving the issue that is causing it to smoke. Neglecting this may lead to a dangerous fire hazard.

– Gas-Powered Leaf Blower Smoking Issue

Though it’s less frequent, gas-powered leaf blowers can also present fire risks. An excessive amount of smoke from a gas-powered leaf blower is typically a sign that you have mixed too much oil with the gas.

If you aren’t sure about the right gas-to-oil ratio for your machine, you’re not alone. But not knowing could risk your safety. Always ensure to follow the manufacturer’s instructions when it comes to mixing fuel. It will not only extend the life of your leaf blower but also keep you safe.

– Preventive Measures and Regular Maintenance

Routine upkeep and sticking to the manufacturer’s instructions for fuel mixing can significantly help avert excessive smoking and, by extension, fire hazards. Notably, leaf blower’s preventive maintenance is not merely an option but also a necessity for every user.

Start with regular cleaning. As innocuous as it sounds, a clean leaf blower is crucial because dirt and debris trapped in odd corners can easily become a fire hazard.

– Importance of Quick Response to Smoking Issues

A prompt response to smoking issues cannot be overstated. Once you notice smoke or any abnormal sign, stop using the leaf blower immediately, identify the cause, and rectify the problem. Doing so is crucial to prevent any potential of causing a fire.

The National Fire Protection Association reminds us all that “keeping anything that can burn at least three feet from heating equipment” is a key preventative measure.

The same principles apply to leaf blowers; keeping them clean, properly fuel-mixed, and quick to respond when they start smoking is paramount. Knowing what to do when issues arise can be a lifesaver.

So, use leaf blowers conscientiously and follow the above tips to ensure a safer, fire-hazard-free experience.

    ..