My Car Runs on Very Little Fuel: Cons

If your car runs on very little fuel then it’s likely a configuration setting on the fuel pump or the fuel pump is faulty.

In previous articles, we’ve discussed the danger attached to driving on empty and here we’re going to tell you the pros and cons that comes with running on little or empty tanks.

By default, the fuel pump is installed inside the gas tank to aid fuel injection and the fuel in turn prevents the fuel pump from overheating.

If the gasoline level of your car becomes little, it loses its ability to cool the fuel pump thereby leading to a decrease in the lifespan of the fuel pump.

While your car will run perfectly due to the pickup pipe that’s situated at the bottom of the tank, dirt and sediments that have accumulated at the bottom will likely flow into the engine causing blockage or engine seizure.

So, if find out that your car is running on little fuel, quickly pull over and refill your tank if possible. You can check out our article on how many miles can I drive on empty.

Without wasting much time, let’s see the effects attached to running your car on very little fuel.

My Car Runs on Very Little Fuel – The Demerits

Car experts recommend that you keep your fuel level at least ¼ of the total fuel content.

Asides from causing damage to the fuel pump, running on little fuel will cause sediments at the bottom of the fuel tank to get into the injectors and converters thereby resulting in seizures.

Here are some disadvantages that come with running on little gasoline.

1. Engine Misfires

Due to inadequate air/fuel mixture getting into the combustion chamber, the engine will likely start to misfire making driving uneasy.

Water particles that have settled at the bottom of the tank can also flow into the engine thereby causing several damages.

This is also accompanied by vibrations, stalling ,and possible loss of engine power. The best way to avoid this is to make sure there’s enough gasoline.

2. Clogged Fuel Filter

Just like the oil filter, the fuel filter helps filtrate the fuel that gets into the engine causing any dirt particles or sediments.

Since the fuel source is coming from the bottom of the fuel tank where dirt has settled, it’ll likely take lots of these contaminants alongside it.

This will result in a clogged fuel filter in no time.

3. Damaged Fuel Pumps

This doesn’t apply to older carbureted cars that make use of mechanical fuel pumps, modern cars which have the fuel pump situated inside the gas tank are likely to encounter this.

Gasoline helps in regulating the temperature of the fuel pumps, if you let the fuel level exceed the gas mark then you’re endangering your fuel pump.

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4. Rust Gas Tank

If you often drive your car on little fuel, the upper parts of the gas tank will start to rust Overtime.

The fuel helps in keeping the gas tank fresh and alive.

5. Clogged Fuel Injector

Substituents that get past the fuel filter will likely come to the fuel injectors and could clog it Overtime.

6. Leaves you stranded

Running your car on little fuel, especially for a long-distance journey is very risky because the car can stop at any time thereby leaving you stranded.

This will serve as a time waster and if you’re unlucky, the car can also stop at a very dangerous spot.

That’s all.

While some cars are built to run on very little fuel, it’s advised that you always keep your gas tank quarterly full.


Why does my car run out of petrol so fast?

Faulty fuel injectors or fuel filters will make your car run out of petrol easily because of its unregulated pumping of fuel to the engine.

What happens when a car is low on fuel?

A car that’s low on fuel will encounter engine Misfires, stalling, and also incur expensive damage to the engine.

What causes a car to not get enough fuel?

A defective fuel pump is the main reason why a car will not get enough fuel supply. These damages are mostly caused by frequently running low on gas thereby exposing the fuel pump to heat.

Why does my car say low fuel when it’s full?

If after topping fuel content and your dashboard still gives the low fuel signal, it’s time to get your sensors checked or check if the fuel octane level is high.

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