The Dangers of Not Emptying a Motorcycle's Gas Tank Before Long-Term Storage

Proper storage of a motorcycle is crucial for its longevity and performance. One of the most overlooked aspects of long-term storage is ensuring that the gas tank is emptied before putting the motorcycle away. Neglecting to do so can lead to a variety of issues that can significantly impact your motorcycle's functionality and lifespan.

The Consequences of Not Draining the Gas Tank

1. Fuel Degradation

Gasoline, especially those containing ethanol, can degrade over time. Ethanol is known to absorb moisture, causing phase separation where water and fuel separate. When you try to start the motorcycle after storage, these issues can cause engine performance problems, leading to rough starts or even the inability to start the bike at all.

2. Corrosion

The moisture from the fuel can lead to rust and corrosion, particularly in metal fuel tanks. This can cause damage to the tank itself as well as the fuel lines, leading to leaks and further issues that can be costly and time-consuming to repair.

3. Clogged Fuel System

Over time, old fuel can leave deposits and varnish in the fuel system, including fuel injectors and carburetors. This buildup can clog lines and components, making it difficult, if not impossible, to start the motorcycle after a long period of storage.

4. Stale Fuel

Using stale fuel can result in poor engine performance, including hard starts, rough idling, and reduced power. In some cases, the fuel may not ignite properly, leading to starting issues that can be extremely frustrating.

5. Potential for Contaminants

Leaving residual fuel in the tank can allow dirt, debris, and other contaminants to settle. When you try to start the motorcycle again, these contaminants can be drawn into the fuel system, causing additional maintenance problems and potential long-term damage.

Best Practices for Storing a Motorcycle

While it's crucial to empty the gas tank before storage, there are additional steps you can take to ensure your motorcycle remains in good condition during its downtime:

Drain the Tank: Completely drain the fuel tank before storage. This can be done by running the engine until it runs out of fuel. If possible, pump out as much fuel as you can to ensure the tank is as empty as possible. Add Fuel Stabilizer: If you prefer to leave some fuel in the tank, add a fuel stabilizer. This can help prolong the life of the fuel and prevent degradation. Make sure to fill the tank to minimize air space, which can reduce moisture buildup. Run the Engine: After adding a stabilizer, run the engine for a few minutes to ensure the treated fuel circulates through the fuel system. This helps minimize issues associated with poor fuel circulation. Store in a Dry Place: Keep the motorcycle in a dry, temperature-controlled environment to reduce the risk of moisture and corrosion. A garage or shed can be ideal for this purpose.

By following these best practices, you can help ensure that your motorcycle remains in good condition during storage and is ready to ride when you take it out again. Proper fuel management is a vital part of motorcycle maintenance, and it's one of the easiest steps you can take to protect your investment.