Lawn Mower Only Starts With Starting Fluid Then Dies: Causes & Fixes

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If your property has a lawn, you understand the importance of keeping your mower in good condition. 

One of the most frustrating problems is when your lawn mower only starts with starting fluid then dies. 

It can be a sign of several different problems. This article will explore these potential causes and offer tips on fixing them.

Why My Lawn Mower Only Starts With Starting Fluid Then Dies

If your lawn mower starts with starter fluid then dies, there are several possible causes. 

Common culprits include a clogged air filter, old fuel, improper oil level, carburetor trouble, and spark plug issues. 

Clogged Air Filter

The air filter is an essential component of a mower. It prevents dirt and debris from entering the engine. 

It is a small but mighty part that helps keep the engine running smoothly. 

However, the air filter can become clogged with debris over time. It can cause the engine to struggle to start and eventually stall. 

Lawn mower only starts with starting fluid then dies

Old Fuel

Over time, dirt, debris, or residue from old fuel can accumulate in the carburetor, limiting fuel flow to the engine. 

It can cause a lean fuel mixture, leading to stalling, misfiring, or other performance issues. 

Improper Oil Level

The oil in your lawn mower is vital in maintaining the engine’s optimal performance level. 

It is responsible for lubricating the engine’s moving parts, preventing them from wearing out too quickly. 

When the engine operates without proper lubrication, the moving parts can become damaged, leading to costly repairs. 

As a result, it is crucial to ensure that the oil level is adequate before starting your equipment. 

If the oil level is too low, the engine can become damaged. Consequently, the mower won’t start. 

By contrast, the engine’s machine stalls if the oil level is too high. It is frustrating and time-consuming to fix. 

Start lawn mower using the starting fluid

Carburetor Trouble

The carburetor mixes fuel and air in the engine. If it is dirty or blocked, it can cause the engine to run poorly or not start.

Over time, dirt, debris, and other contaminants can accumulate in the carburetor, clogging its passages and jets. 

It can result in a lean fuel mixture. There is not enough fuel to mix with the air in the engine. 

As a result, the engine may start with starting fluid, but it will quickly die out.

Spark Plug Issues

The spark plug is a critical engine component that ignites the fuel and air mixture to keep the engine running. 

If the spark plug is dirty or damaged, it can’t create a strong enough spark to ignite the mixture. Consequently, it can cause the engine to stall out. 

How long does a lawn mower spark plug last?

How To Repair A Mower That Starts With Starting Fluid But Then Dies?

It can be frustrating if your equipment starts with starting fluid but then dies. You can try the following methods:

Swap the Air Filter

Start by locating the air filter housing on your mower, typically on the side or at the top of the engine. Once you have found it, remove the cover and the old air filter.

Before installing the new air filter, check the owner’s manual to ensure you select the right type for your machine. 

Once you have the correct filter, install it in the housing, ensuring it is secured. 

Replace the cover and tighten any screws or bolts holding it. Once you have done this, start your equipment.

Clean the Carburetor

Use a carburetor cleaner to clean this component. Spray the solution on the bowl and the carburetor. 

Scrub any remaining debris or sediment off the bowl and the carburetor using a brush. 

Be careful not to damage the carburetor’s components while cleaning it. After that, reassemble the piece. 

Make sure all components are properly seated and tightened. Then, start the equipment. 

Adjust the Oil Level

Locate the dipstick on the engine to check the oil level. Remove and wipe it clean. Make sure that the mower is on level ground so that you get an accurate reading. 

Reinsert the dipstick and remove it again to check the oil level. If the oil level is low, add more until it reaches the recommended level. 

It’s essential to use the type of oil recommended by the manufacturer.

Drain and Add Fuel

Locate the fuel tank, usually at the top of the machine. Next, you must remove the fuel cap to access the fuel tank. 

Place a container under the fuel tank. Remove the fuel line from the carburetor. 

It will allow the old fuel to flow out of the tank and into the container you placed below it. 

Once the tank is empty, add fresh oil to it. Ensure that the fuel you add is clean and free from contaminants. After that, start the equipment.

Replace the Spark Plug

Turn off the mower, and let it cool down before attempting any repairs. 

Next, remove the spark plug wire from this component. Inspect it for any signs of damage. If none exist, move on to the spark plug. 

Remove the old spark plug using a wrench. Replace it with a new one. 

Take care to tighten the new spark plug to the manufacturer’s recommended torque settings, as over-tightening can cause damage. 

Finally, reattach the spark plug wire and start the machine.

What can I use instead of starter fluid in lawn mower?

What Can I Use Instead Of Starter Fluid In Lawn Mower?

Starter fluid is a common tool for starting a stubborn lawn mower. However, you can replace it with a carburetor cleaner.

It is a powerful solvent designed to clean an engine’s carburetor and other components. 

It is also an excellent alternative to starter fluid when starting your machine.

Moreover, it helps start the engine and cleanses any buildup that might clog the carburetor. Follow these simple steps to use this alternative:

  • Locate the air filter housing and remove the air filter.
  • Spray a small amount of carburetor cleaner directly into the air intake.
  • Try starting the mower. If it doesn’t operate, repeat the above process.
Starting fluid for Small engine

The Bottom Line

If your lawn mower only starts with starting fluid and then dies, it could be due to various issues. 

These may include clogged air filters, old fuel, improper oil levels, carburetor trouble, or spark plug issues. 

Finding the causes and applying the methods above will help you keep your machine running smoothly.

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