Does Revving Your Engine Help Jump a Car?

Introduction

When your car battery dies, you may be tempted to try to jump-start it by revving the engine of another car. However, does this actually work? Let’s take a closer look.

How Jump-Starting Works

When you jump-start a car, you are using the battery of another car to provide the power needed to start your engine. The jumper cables connect the positive terminals of both batteries and the negative terminals of both batteries.

When the engine of the donor car is started, it begins to generate electricity. This electricity flows through the jumper cables and into the battery of the dead car. The battery of the dead car then uses this electricity to start the engine.

Does Revving the Engine Help?

Revving the engine of the donor car does not help to jump-start the dead car. In fact, it can actually make the situation worse.

When you rev the engine, you are increasing the speed at which the alternator generates electricity. This can cause the voltage of the electricity to become too high, which can damage the battery of the dead car.

Additionally, revving the engine can put a strain on the starter motor of the donor car. This can cause the starter motor to fail, which would prevent you from being able to jump-start the dead car.

Conclusion

Revving the engine of the donor car does not help to jump-start the dead car. In fact, it can actually make the situation worse. If you need to jump-start a car, simply follow these steps:

1. Connect the positive terminals of both batteries with a jumper cable.
2. Connect the negative terminals of both batteries with a jumper cable.
3. Start the engine of the donor car.
4. Wait a few minutes for the battery of the dead car to charge.
5. Try to start the engine of the dead car.