What Causes My Generator to Surge?

What Causes My Generator to Surge?

Generators are essential for providing reliable power during outages and in remote areas. However, if your generator occasionally surges and makes unsettling revving sounds, it’s crucial to address the underlying issues. Discover what causes your generator to surge and learn how to maintain it reliably in this blog post. From fuel considerations to regular checks on oil, filters, and spark plugs, we’ll guide you through essential steps to ensure your generator operates smoothly.

The Importance of Correct Fuel

One of the primary reasons your generator might be surging is due to incorrect or insufficient fuel. Think of your generator like a vehicle; it needs the right fuel to operate smoothly. If you’re using the wrong type of fuel or running low on it, your generator can’t function as it should. So, always ensure you have the correct fuel for your generator’s make and model.

Check Your Oil Levels

Just like a vehicle, generators require proper lubrication to run efficiently. Low oil levels can lead to surging issues. Regularly check your generator’s oil levels and change the oil when needed. Neglecting this maintenance task can cause unnecessary stress on your generator, leading to surging problems down the road.

The Role of Oil Filters

In your car, you replace the oil filter regularly to keep the engine clean and running smoothly. Your generator is no different. A dirty or clogged oil filter can restrict the flow of oil to the engine, resulting in surging. Make it a habit to inspect and replace your generator’s oil filter as part of routine maintenance.

The Importance of Air Filters

Just as your car needs clean air for proper combustion, your generator relies on clean air for efficient operation. A dirty air filter can obstruct the airflow, this causes your generator to surge. Regularly check and replace the air filter to ensure your generator breathes easy.

Spark Plugs Matter

A key component in your generator’s ignition system, spark plugs play a crucial role in the combustion process. If your spark plugs are fouled or worn out, they can’t generate the necessary spark for ignition, leading to surges. Inspect and replace spark plugs as needed to keep your generator running smoothly.

Maintenance is the Key

The common thread among these potential surge causes is maintenance. Just like any machine with a motor, your generator requires regular upkeep to perform at its best. Neglecting maintenance can result in noisy surges and unreliable operation.

If your generator is surging, making those unsettling revving sounds, it’s almost always due to a maintenance issue. Ensure you have the correct fuel, maintain proper oil levels, change filters when necessary, and keep an eye on spark plugs. These simple steps can go a long way in preventing surging and ensuring your generator remains reliable.


In summary, the key to preventing your generator from surging and producing unsettling revving sounds lies in diligent maintenance and addressing the right issues. From ensuring you use the correct type of fuel to conducting regular checks on oil levels, filters, and spark plugs, these steps are fundamental to the smooth and reliable operation of your generator. Addressing these aspects not only mitigates the risk of surging but also extends the life of your generator, ensuring it provides dependable power when you need it most. Remember, just like any mechanical equipment, your generator thrives on regular care and attention.

If you have any questions about generator maintenance or need professional advice on how to keep your generator running smoothly, don’t hesitate to contact us. Our team of experts is here to help you with all your generator needs, from routine maintenance to troubleshooting and repairs.