Does Revving the Engine While Jumping a Car Help?

Introduction

If you’ve ever had to jumpstart a car, you may have wondered if it helps to rev the engine while the other car is providing power. The answer is yes, but only in certain situations.

When to Rev the Engine

There are two main scenarios where revving the engine can help when jumpstarting a car:

When the battery is completely dead. If the battery is completely dead, there is no power to start the engine. Revving the engine can help to create a small amount of power that can be used to start the car.
When the battery is weak. If the battery is weak, it may not be able to provide enough power to start the engine on its own. Revving the engine can help to increase the power output of the battery and start the car.

When Not to Rev the Engine

There are also some situations where revving the engine can actually hurt your chances of jumpstarting a car:

When the battery is new. If the battery is new, it is usually not necessary to rev the engine. Revving the engine can actually damage the new battery.
When the jumper cables are not connected properly. If the jumper cables are not connected properly, revving the engine can damage the cables or the car’s electrical system.

How to Rev the Engine

If you are going to rev the engine while jumpstarting a car, it is important to do it correctly. Here are the steps:

Connect the jumper cables to the dead battery and the good battery.
Start the car with the good battery.
Slowly rev the engine of the car with the dead battery.
Continue to rev the engine until the car with the dead battery starts.
Once the car with the dead battery starts, let it run for a few minutes to charge the battery.

Conclusion

So, does revving the engine while jumping a car help? The answer is yes, but only in certain situations. If the battery is completely dead or weak, revving the engine can help to create or increase the power output needed to start the car. However, it is important to avoid revving the engine if the battery is new or if the jumper cables are not connected properly.