What’s a Car Misfuel, How Does It Happen, and How Do I Fix It?


Misfuelling your car is an easily avoidable but surprisingly common mistake. It can be a costly and time-consuming mistake to fix. But don’t panic—we’re here to help you recover from a car misfuel.

But first, what’s a car misfuel? Let’s talk about that:

What’s a Car Misfuel and How Does It Happen?

A car misfuel is when the wrong fuel type is put into a car. This could be anything from putting diesel into a gasoline car or gasoline in a diesel car. It can also be putting the wrong grade of fuel into a car. This can be a costly mistake that can damage the car’s engine and cause the car to break down.

The most common misfuel happens when someone puts diesel into a gasoline car. This happens because diesel pumps are typically larger and darker than gasoline pumps, and the nozzle size is much bigger. This can lead people to fill their gasoline cars with diesel mistakenly.

Once a car has been misfuelled, it’s important to get it to a mechanic as soon as possible. The longer the wrong fuel is in the car, the more damage it can cause. If the misfuel is caught soon enough, the fuel can usually be drained and replaced with the correct fuel. However, if it’s not caught and the wrong fuel is left in the system, it can cause significant damage to the fuel system and the engine.

How Can I Address a Misfuelled Car?

The first step is to identify the type of fuel that was put in your car. If it was diesel, this is more serious than if it was petrol. It is important to know this to take the correct steps to address the issue.

Once you’ve identified the type of fuel that was put into your car, you’ll need to drain it. To do this, you can either take your car to a professional mechanic, or you can do it yourself. To do it yourself, you’ll need to locate the drain plug, which is usually near the fuel tank. Then, open the drain plug and let the fuel drain out. Once the fuel is drained, close the drain plug and fill your car with the correct fuel.

If you’ve misfuelled your car with diesel, then the next step is to flush the fuel system. This can be done by a professional mechanic using a fuel system flushing kit. If you’re doing it yourself, then you’ll need to disconnect the fuel lines and flush the fuel system with water. Then, reconnect the fuel lines and fill your car with the correct fuel.

Once you’ve drained and flushed the fuel system, you’ll need to check for damage. If you’ve put the wrong fuel in your car, then it’s possible that the fuel may have caused damage to the fuel system components. It’s important to have a professional mechanic check your car for any damage, as it may be unsafe to drive with a damaged fuel system.

Finally, once you’ve checked for damage, you’ll need to reset your car’s onboard diagnostics. This can be done by a professional mechanic or you can do it yourself. To do it yourself, you’ll need to locate the diagnostic port and connect it to a scanner. Once connected, the scanner will allow you to reset the onboard diagnostics.

By following these steps, you can address a misfuelled car and get back on the road. It’s important


Car misfuelling is a costly mistake that can easily be avoided. The best way to prevent this from happening is to double-check that you are putting the correct fuel in your car. If you’re unsure, ask a professional or consult your vehicle’s manual. It’s also important to pay attention to the nozzle size and colour of the pump when filling up your car. And, of course, if you’ve already misfuelled your car, take action right away to reduce the extent of the damage!

Fuel Fixer offers on-the-call mobile units ready to reach out to any misfuelled vehicle to address the problem quickly and effectively. If you are looking for 24/7 fuel replacement, get in touch with us right away.

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