Can You Fill Up a Car with the Engine On?

Short Answer

No, you should not fill up a car with the engine on.

Long Answer

It is not advisable to fill up a car with the engine on for several reasons:

Safety Concerns

* Fire hazard: Gasoline is highly flammable, and fumes from the fuel tank can be ignited by sparks from the engine. Filling up with the engine on increases the risk of a fire.
* Carbon monoxide poisoning: Exhaust fumes from the engine contain carbon monoxide, a toxic gas that can cause dizziness, nausea, and even death if inhaled in high concentrations. Leaving the engine on while refueling can lead to carbon monoxide buildup in the area around the vehicle.

Fuel System Damage

* Vapor lock: When the engine is running, the fuel system is pressurized. If you fill up with the engine on, the increased pressure can cause vapor lock, a condition where the fuel evaporates and forms bubbles in the fuel lines, leading to engine problems.
* Fuel filter damage: Gasoline contains impurities that can damage the fuel filter. Running the engine while refueling introduces these impurities into the fuel system, which can clog the filter and restrict fuel flow to the engine.

Environmental Concerns

* Evaporative emissions: When you fill up with the engine on, gasoline fumes are released into the atmosphere. These fumes contribute to air pollution and can harm the environment.
* Spillage: Refueling with the engine on can lead to fuel spillage, which can pollute soil and water sources.

When to Fill Up

* Turn off the engine and allow the car to cool down for a few minutes before refueling.
* Park on a level surface and engage the parking brake.
* Remove the gas cap and insert the nozzle firmly into the fuel tank.
* Hold the nozzle steady and fill the tank to the first automatic shut-off. Do not overfill.
* Replace the gas cap securely.

Additional Tips

* Do not smoke or use electronic devices near the refueling area.
* Ventilate the area adequately by opening windows or doors.
* Dispose of used gas cans and rags properly.
* Report any fuel spills or leaks immediately.