Every part of your car is essential for your safety. In particular, the car brake helps you to reduce the vehicle’s speed when encountering obstacles on the road.
So there are many questions regarding the brake pedal, such as “why my brake light stays on” or “the brake pedal goes to floor when engine running.” These problems are widespread. It would help if you found out specific reasons and solutions for these problems.
This article will show you why the brake pedal goes to the floor when the engine is running and how to fix it effectively.
Causes Of Brake Pedal Going To Floor When Engine Running
The brake pedal goes to the floor when the engine is running is quite a common phenomenon. Here are the reasons that many people have experienced:
Brake fluid leak.
One of the most common causes of this is a brake fluid leak. When using the leaky brake pedal, the brake fluid inside will spill out.
Then, this unit will suck in the air from the outside. From there, the pedal will occur to the floor when the vehicle is moving.
The cause of this phenomenon is that your brake line has expired. They will have rust and may not work as well as before. You can easily spot the leak with the naked eye. If you see a puddle of oil on the ground, it’s time to replace your car’s brake lines.
Broken brake booster.
The brake booster is an essential part to help you increase the power of the brake. However, without the support of this part, you will need to use a lot of force to bring the car to a halt.
Therefore, you need to check the brake booster when having problems and find a solution in time. If you feel the brake pedal is quite close to the floor, but it is difficult to press the brake, it is most likely because the booster is damaged and needs repair.
Master cylinder problem.
The master cylinder is also another essential part of reducing the speed of the vehicle.
They have the role of helping transfer brake fluid to the pistons and slowly bring the car to a stop. The part that needs to keep the power to push the brake fluid to the front and rear wheels should be sealed.
So, if the rubber gaskets tear or corrode, the pressure to transfer brake fluid is not enough and leads to oil leakage from the inside. If the cylinder has a problem, the brake pedal will almost touch the floor when you start the engine.
There is air inside the brake pedal.
To create the pressure that helps the brake pedal work, there needs to be no air inside.
This phenomenon usually occurs when you replace the master cylinder with a new one, and the outside air enters the brake line. From there, they will prevent brake fluid from reaching the wheels. So. You need to promptly drain all the air inside so that the brake pedal returns to normal.
Missing brake fluid.
A lot of vehicle owners often don’t care too much about brake fluid. But that is the wrong action because brake fluid has the role of helping the brake pedal to slow down the vehicle. If the oil level is too low, your vehicle will lose braking power.
For example, you drive a car at high speed and need to brake quickly, but the brake fluid level is not enough. As a result, your vehicle will not stop and may cause an accident if there is an obstacle ahead.
How To Fix Brake Pedal Goes To Floor When Engine Running
It would help if you had timely solutions after finding out what causes the brake pedal to go to the floor when the engine is running. Here are effective fixes:
Check brake fluid.
As we said above, brake fluid is vital for your vehicle. Therefore, you should check the fuel level regularly to make sure the brake pedal works stably.
You can check the plastic container of the brake fluid to see if the level is up to standard. If the oil level is not enough, you need to replenish it immediately so that the car can work properly.
The master cylinder is located behind the brake pedal. This part is the leading cause of leaks in the engine, causing the brake pedal to go to the floor when the engine is running.
To repair the cylinder, you need to determine where the torn rubber gasket is. If you can’t find it, you can replace it with a new master cylinder to be on the safe side.
Repair brake booster.
The booster is located between the master cylinder and the pedal. Therefore, you can very easily find this part and repair it in time.
Fixing the booster is very simple. You need to pull the vacuum tube out of that part and try pressing the pedal. If the pedal is raised and has good pressure, you can install the booster again.
Check brake lines.
Broken brake lines are hazardous, affecting you and those around you. Therefore, you need to check this part as soon as the brake pedal goes to the floor when the engine is running.
If you see a puddle of oil near your car, chances are the brake lines have broken. Would you please remove the tire and reconnect the brake line in time? Otherwise, your vehicle will not be able to use the brake pedal.
Go to the repair facility.
The above treatments you can do at home. But if you can’t do it yourself, look to your local car dealership to fix the problem.
There, experts will help you find the cause and improve it in time. They are all people with many years of experience, so you can rest assured and ask for their help.
Using the vehicle with the brake pedal to the floor when the engine is running is very dangerous. Therefore, the best way is not to drive the car and check the car carefully to find out the specific reason.
Hopefully, the above article has helped you know more about the cause of brake pedal goes to floor when engine running and how to fix it effectively.