Repairing A Generator With Old Gas

It’s never a smart idea to turn off your generator. However, what should you do if the gas has gone bad? What can you do about it?

Repair shops recommend emptying the fuel tank after storm season. Before emptying, let the engine cool down. The generator should be run until it runs out of gas, then the tank should be emptied. Your generator should always run on fresh, steady gas.

How To Fix A Generator With Old Gas?

To repair an old gas generator, drain the fuel tank by disconnecting the fuel line from the carburetor and opening the fuel valve, allowing the old gas to drain into a suitable container. For proper combustion, replace with fresh fuel and completely clean the carburetor.

To convert your old gas-powered generator into a new one that doesn’t consume any gas, follow these ten steps:

Step 1: Examine the generator for any damage

The first step is to inspect the generator for any damage that the old gas may have caused. This includes inspecting the generator’s engine, tank, and other components. Before you move any farther, you must repair any damage.

Step 2: Drain the Tank of the Old Gas

It’s time to empty the old gas out of the generator tank after you’ve checked for any damage. This can be done with a syphon pump or another method that removes all the gas.

Without splattering anything on the floor. It might seem strange to have to empty the gas tank. However, it is required to complete the conversion procedure.

Step 3: Cleaning the Tank

It’s time to clean the tank after you’ve drained it. Using a cleaning solution or simply rinsing it with water will suffice. After cleaning, make sure there are no traces of the old gas left in the tank, otherwise, it will cause problems later.

Step 4: Get a New Gasoline Fill-Up

After you’ve cleaned out the generator tank and made sure there’s nothing left over from the last gasoline, you’re ready to go. It’s time to get a new tank of gas. Make certain that the new gasoline is free of contaminants. It could also cause issues with the generator in the future.

Step 5: Examine the Air Filter

Check the air filter before using it again. If the air filter is clogged, the generator may be damaged. To get an old generator to operate again, you’ll need to replace the air filter.

Step 6: Examine the Spark Plug

Before using new fuel, make sure the spark plug is in good shape. Because if there are no contaminants in the fuel, this component can simply wear out. Replace the spark plug wires if you see any damage.

Step 7: Examine the Carburetor

Another vital component of the generator that should be checked before restarting it is the carburetor. If there is a problem with the carburetor, it can cause the generator to fail. Clean or replace the carburetor if it isn’t performing properly.

Step 8: Examine the Generator Belt

The generator belt can also be a source of frustration. And it needs to be examined before the generator is started up again. If the belt is worn out or broken, it must be replaced in order for the generator to function properly.

Step 9: Verify the Voltage

Before operating a generator again, make sure the voltage is correct. If the voltage is incorrect, the generator or any equipment plugged into it may be damaged.

Step 10: Turn on the generator

It’s time to turn on the generator and double-check that it’s operational. It’s time to switch it on now that you’ve completed all these steps. Before utilizing the generator again, it’s critical to fix any issues.

What Are The Reasons Why Your Generator Isn’t Starting?

There’s nothing more aggravating than taking your generator out of the garage only to discover that the engine won’t come on.

Fortunately, if your generator won’t start, it’s usually only a little inconvenience rather than a sign of a more major issue with the unit.

Troubleshooting your generator should begin with some of the most typical causes of starting problems.

1. The Generator’s Fuel Supply Is Running Low

It may seem self-evident, but make sure your generator’s fuel tank is full of gasoline. If not, there’s a good chance your engine isn’t turning over. If you’re using propane to power your generator, double-check that the tank has adequate gas and that all of the tank and tubing valves are open.

2. Your Engine’s Oil Level Is Low

It’s just as crucial to have oil as it is to have fuel for your generator. Most modern generators have a sensor that detects low oil levels and instantly shuts off the generator to protect the engine.

Low oil could be the source of your generator’s starting troubles if you haven’t replaced it in more than 50 hours of operation (or more than 20 hours if it’s a new generator) or detected a leak.

3. The Battery Has Run Out

If your generator has an electric starting, whether it’s a push-button or a remote, the first thing you should look for is an issue with the starter’s battery. The electric starter on your generator will not work if the battery has died, just like in a car.

4. There’s A Problem With The Spark Plug

The problem could be with your spark plug if the engine won’t even try to turn over upon the starter. To inspect your spark plug, first, remove it from the engine using a spark plug socket. The spark plug should be replaced if it has deposits that can’t be removed with a brush, cracked porcelain, or damaged electrodes.

Related Questions

Is it possible to add a fuel stabilizer to old gas?

Everyone says that you should put a stabilizer in your gas as soon as you buy it. They’re all sure that no additive can bring old gasoline back to life. The best you can hope for is that adding a stabilizer to old gas will prevent it from deteriorating further.

What is the best way to keep gas fresh for years?

Before filling the tank with gasoline, add a couple of ounces of fuel stabilizer per 5-gallons of fuel. Your fuel will stay fresh for up to a year if you do it this way. You’ll need about 10 ounces of gasoline stabilizer for a 25-gallon tank.


The procedure of converting an existing generator to run on fresh gas should not be done lightly. Many things can go wrong if you don’t follow the steps correctly. As a result, it’s critical that you understand what must be done.

Leave a Comment