As the summer months approach, many of us are eager to get our lawn mowers out and start maintaining our lawns. However, one common issue that can prevent us from doing so is when our lawn mower fails to start. There are several reasons why this might happen, but one often-overlooked cause is old gas. In this article, we will explore the effects of old gas on lawn mowers and what you can do to prevent it from causing problems.
Understanding How Gasoline Works in Lawn Mowers
Before we dive into the specifics of old gas, it’s essential to understand how gasoline works in lawn mowers. Gasoline is a volatile liquid that evaporates quickly, leaving behind a residue. When you fill up your lawn mower with gas, the fuel is drawn into the engine, where it is mixed with air and ignited, producing power. However, over time, the gasoline in your lawn mower can break down, leading to a range of problems.
The Effects of Old Gas on Lawn Mowers
Old gas can have several negative effects on your lawn mower. One of the most significant problems is that it can cause the fuel to become stale, which can prevent the engine from running properly. Stale fuel can also lead to the formation of varnish and gum, which can clog the fuel system and prevent the engine from starting. Additionally, old gas can cause corrosion in the fuel tank and fuel lines, leading to leaks and other issues.
How Old Gas Becomes Stale
Gasoline can become stale due to a range of factors, including exposure to air, heat, and moisture. When gasoline is exposed to air, it can oxidize, leading to the formation of gums and varnishes. Heat can also cause the gasoline to evaporate more quickly, leading to a decrease in the fuel’s octane rating. Moisture can also enter the fuel system, leading to the growth of bacteria and other microorganisms that can break down the fuel.
Symptoms of Old Gas in Lawn Mowers
If your lawn mower is experiencing problems due to old gas, there are several symptoms you may notice. Difficulty starting the engine is one of the most common symptoms, as the stale fuel can prevent the engine from running properly. You may also notice reduced power and performance, as the engine struggles to run on low-quality fuel. In some cases, you may even notice leaks or corrosion in the fuel system, which can be a sign of more serious problems.
Diagnosing Old Gas Problems
If you suspect that old gas is causing problems with your lawn mower, there are several steps you can take to diagnose the issue. Check the fuel tank and fuel lines for signs of corrosion or leaks, and look for any blockages or restrictions in the fuel system. You can also try draining the old gas and replacing it with fresh fuel to see if this resolves the problem. If the issue persists, it may be necessary to take the lawn mower to a small engine repair shop for further diagnosis and repair.
Preventing Old Gas Problems
The best way to prevent old gas problems is to use up the fuel in your lawn mower before it has a chance to become stale. This means running the engine regularly and not leaving the fuel to sit for extended periods. You can also add a fuel stabilizer to the gas to help prevent it from becoming stale. Fuel stabilizers can help to prevent the growth of bacteria and other microorganisms that can break down the fuel, and can also help to prevent corrosion in the fuel system.
Tips for Storing Lawn Mowers with Gasoline
If you need to store your lawn mower for an extended period, there are several steps you can take to prevent old gas problems. Drain the fuel tank and fuel lines to prevent the fuel from becoming stale, and add a fuel stabilizer to the gas to help prevent corrosion and other issues. You can also store the lawn mower in a cool, dry place to prevent the fuel from becoming heated or exposed to moisture.
Storing Lawn Mowers for Winter
If you live in an area with cold winters, you may need to store your lawn mower for several months. In this case, it’s essential to take steps to prevent old gas problems. Drain the fuel tank and fuel lines, and add a fuel stabilizer to the gas to help prevent corrosion and other issues. You can also store the lawn mower in a warm, dry place to prevent the fuel from becoming cold or exposed to moisture.
Conclusion
In conclusion, old gas can indeed make your lawn mower not start. Stale fuel can prevent the engine from running properly, and can also cause corrosion in the fuel tank and fuel lines. However, by using up the fuel in your lawn mower before it has a chance to become stale, adding a fuel stabilizer to the gas, and storing the lawn mower properly, you can help to prevent old gas problems and keep your lawn mower running smoothly.
To summarize the main points in this article, here is a list of key takeaways:
- Old gas can cause a range of problems in lawn mowers, including difficulty starting the engine and reduced power and performance.
- Stale fuel can prevent the engine from running properly, and can also cause corrosion in the fuel tank and fuel lines.
- Using up the fuel in your lawn mower before it has a chance to become stale, adding a fuel stabilizer to the gas, and storing the lawn mower properly can help to prevent old gas problems.
By following these tips and being aware of the potential problems caused by old gas, you can help to keep your lawn mower running smoothly and prevent costly repairs.
Can old gas really cause my lawn mower not to start?
Old gas can indeed cause problems with your lawn mower, including failure to start. Gasoline is a volatile liquid that can break down over time, leading to the formation of gum, varnish, and other deposits. These deposits can clog the fuel system, including the carburetor, fuel injectors, and fuel lines, making it difficult or impossible for the engine to start. Additionally, old gas can also cause corrosion and damage to the fuel system components, further exacerbating the problem.
The likelihood of old gas causing problems depends on various factors, including the age of the gas, storage conditions, and the type of fuel used. Gasoline that is more than 30 days old is considered stale and can start to break down. If the gas is stored in a dirty or contaminated container, or if it is exposed to heat, light, or moisture, it can degrade even faster. To minimize the risk of old gas causing problems, it’s essential to use fresh gas, store it properly, and maintain your lawn mower’s fuel system regularly. This can include draining old gas, cleaning the fuel system, and using a fuel stabilizer to help prevent degradation.
How long can I store gas before it goes bad?
The storage life of gasoline depends on various factors, including the type of fuel, storage conditions, and the container used. Generally, gasoline can be stored for up to 6 months without significant degradation, but this can vary depending on the conditions. If the gas is stored in a cool, dry, and dark place, away from heat sources and ignition sources, it can last longer. However, if the gas is stored in a hot, humid, or contaminated environment, it can break down much faster.
To store gas safely and minimize the risk of degradation, it’s essential to use a clean, dry, and vented container that is specifically designed for storing gasoline. The container should be made of a material that is resistant to corrosion and damage, such as plastic or metal. It’s also important to keep the container away from heat sources, ignition sources, and open flames, and to store it in a well-ventilated area. Additionally, using a fuel stabilizer can help to extend the storage life of the gas and prevent degradation.
What are the symptoms of old gas in my lawn mower?
The symptoms of old gas in your lawn mower can vary depending on the extent of the degradation and the type of fuel system used. Common symptoms include difficulty starting the engine, rough idling, stumbling or hesitating, and a decrease in power and performance. You may also notice a decrease in fuel efficiency, as the engine may be burning more fuel than usual to compensate for the degraded fuel. In severe cases, old gas can cause the engine to stall or die, or even prevent it from starting at all.
If you suspect that old gas is causing problems with your lawn mower, it’s essential to take action to address the issue. The first step is to drain the old gas from the tank and fuel system, and then clean the fuel system components, including the carburetor, fuel injectors, and fuel lines. You can use a fuel system cleaner or a mixture of gas and fuel additive to help dissolve and remove any deposits or varnish. After cleaning the fuel system, refill the tank with fresh gas and try starting the engine. If the problem persists, it may be necessary to seek the help of a small engine mechanic or repair professional.
Can I use a fuel additive to fix old gas?
Fuel additives can be used to help stabilize and restore old gas, but they are not a magic solution. Some fuel additives, such as those containing detergents and dispersants, can help to dissolve and remove deposits and varnish from the fuel system, while others, such as those containing antioxidants and corrosion inhibitors, can help to prevent further degradation. However, fuel additives are most effective when used preventatively, rather than as a cure for already degraded gas.
To use a fuel additive effectively, it’s essential to choose the right type of additive for your specific needs. Look for an additive that is specifically designed for small engines and lawn mowers, and follow the instructions carefully. Typically, you will need to add the recommended amount of additive to the gas tank, and then fill the tank with fresh gas. It’s also important to note that fuel additives are not a substitute for regular maintenance, and you should still drain old gas, clean the fuel system, and maintain your lawn mower regularly to ensure optimal performance and longevity.
How do I properly dispose of old gas?
Proper disposal of old gas is essential to prevent environmental contamination and health hazards. You should never dispose of old gas by pouring it down the drain, as it can contaminate waterways and harm aquatic life. Instead, take the old gas to a recycling center or a service station that accepts used gas. Many communities also have designated collection events or facilities for hazardous waste, including old gas.
When transporting old gas, it’s essential to use a properly labeled and vented container that is specifically designed for storing gasoline. Make sure the container is tightly sealed and leak-proof, and avoid transporting it in your car or on public transportation. You should also wear protective gloves and eyewear, and avoid breathing in the fumes. If you are unsure about how to dispose of old gas in your area, contact your local waste management agency or public works department for guidance. They can provide information on the proper procedures and facilities for disposing of hazardous waste, including old gas.
Can I prevent old gas from causing problems in my lawn mower?
Yes, you can take steps to prevent old gas from causing problems in your lawn mower. The best approach is to use fresh gas, and to store it properly. This includes using a clean, dry, and vented container, keeping it away from heat sources and ignition sources, and storing it in a well-ventilated area. You should also use a fuel stabilizer to help prevent degradation, and consider adding a fuel additive to the gas to help keep the fuel system clean.
Regular maintenance is also essential to prevent old gas problems. This includes draining old gas from the tank and fuel system at the end of each season, cleaning the fuel system components, and maintaining the lawn mower’s engine and fuel system. You should also check the fuel filter regularly, and replace it as needed. By taking these steps, you can help to prevent old gas from causing problems with your lawn mower, and ensure that it runs smoothly and efficiently all season long. Additionally, consider using a lawn mower with a fuel-injected engine, which can be less prone to fuel system problems than carbureted engines.