How to Fix Generator Not Producing Power (5 Ways Added!)

A generator is an invaluable resource in times of power outages or when electricity is not easily accessible. But what happens when your trusted generator isn’t producing power as expected?

Before rushing to a professional mechanic, there are a few procedures that you can undertake yourself.

This guide will walk you through five potential ways to fix a generator that is not producing power, each method explained in simple, easy-to-follow steps.

So, let’s dive in and get your generator back up and running!

How to Fix Generator Not Producing Power

How to Fix Generator Not Producing Power

Check the Fuel Level

The first and most straightforward step in diagnosing your generator’s issue is to check the fuel level.

It may sound overly simple, but many times, the generator is not producing power simply because it has run out of fuel. Ensure that your generator is adequately filled with the correct type of fuel specified in the user manual.

Do not overlook this step, because even if it seems obvious, it’s one of the most common reasons why generators stop producing power.

If your fuel level is low, refill it and try running the generator again. Never operate a generator without sufficient fuel, as it can cause damage to the engine and the generator’s components.

Inspect the Circuit Breakers

The second step is to inspect the circuit breakers. Circuit breakers are safety devices designed to protect an electrical circuit from damage caused by an overload or a short circuit.

Your generator has circuit breakers that can trip and shut off the electrical flow if they detect an issue. So, if your generator is not producing power, it could be due to a tripped circuit breaker.

To inspect this, locate the circuit breaker panel on your generator and check if the breaker has moved to the ‘Off’ position. If so, switch it back to the ‘On’ position.

Remember, always ensure the generator is off before touching the circuit breakers to avoid any safety hazards. The generator should start producing power after resetting the circuit breakers. If it doesn’t, move on to the next step.

Examine the Air Filter

The third step involves examining the air filter. The air filter of your generator plays a crucial role in its operation by preventing dirt, dust, and debris from entering the engine. If the air filter is dirty or clogged, it can prevent the generator from starting or running efficiently, leading to a failure in power production.

To check the air filter, locate it (usually housed in a small box on the side of the generator), remove it, and inspect for any visible dirt or debris.

If it’s dirty, you can usually clean it with warm, soapy water (or replace it if it’s severely clogged). After cleaning or replacing the air filter, try to start the generator again.

Remember, a clean air filter is essential for the generator’s proper functioning, so regular checks and maintenance should not be neglected. If the generator still doesn’t produce power, proceed to the next troubleshooting step.

Review the Spark Plug

The fourth step is to review the spark plug. The spark plug plays a vital role in a generator’s engine by igniting the fuel-air mixture in the cylinder to generate power. If the spark plug is faulty, dirty or worn out, it can prevent the generator from producing power.

To inspect the spark plug, first, locate it (usually near the front or side of the generator). Disconnect the spark plug wire and remove the spark plug using a spark plug socket.

Examine the spark plug for any signs of wear or damage. If it appears worn, dirty, or damaged, it’s best to replace it. Even if it seems to be in reasonable condition, if you have not replaced your spark plug in a while, it can be good maintenance to replace it anyway.

Remember, a poorly functioning spark plug can prevent your generator from producing power.

After replacing the spark plug, reattach the spark plug wire and try to start the generator.

Analyze the Oil Level

The fifth and final step is to analyze the oil level. Generators often have a low oil shutdown feature that automatically turns off the generator when the oil levels are insufficient. This feature is designed to prevent damage to the engine caused by overheating due to low oil.

To inspect the oil level, you need to locate the oil dipstick or sight glass (typically on the side of the generator). Withdraw the dipstick, wipe it clean, reinsert it, and then remove it again to examine the oil level.

If it’s below the ‘Full’ mark, your generator could be shutting down due to low oil. In this case, add the appropriate type and amount of oil as mentioned in your generator’s user manual.

After refilling, attempt to start your generator again. If it still doesn’t produce power, it might be time to seek professional help.


In conclusion, a generator not producing power can stem from several issues, including fuel problems, faulty spark plugs, or even an exhausted engine. Understanding these potential causes is the first step towards efficient troubleshooting.

Regular maintenance and checks can help prevent such problems, enabling your generator to function optimally when you need it most.

Remember, when dealing with complex issues, it can be beneficial to consult with a professional to avoid exacerbating the problem.


What could be the reason my generator isn’t producing power?

This issue could be due to various reasons, such as fuel problems, faulty spark plugs, or an exhausted engine.

How often should I perform maintenance checks on my generator?

Regular maintenance checks are recommended, ideally every 3-6 months, depending on usage.

Can I fix a generator that’s not producing power by myself?

While some issues may be fixable with basic knowledge, complex problems should be handled by a professional to avoid further damage.

What tools might I need to fix a generator?

The tools you need will depend on the issue but may include a multimeter, screwdriver, or wrench.

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