Skip the auto shop - Our mechanics make house calls

Q: Changed brake pads and no obvious fluid leaks, brake pedal goes to floor with no resistance.

asked by on

Changed brake pads and no obvious leaks, pedal goes to floor with no resistance

A: When you replace your brake pads you had to...

When you replace your brake pads you had to push back the caliper pistons to get the pads out and the new ones in. After the calipers are put back on you will have to pump the brake pedal several times to pump it up using short strokes.

If you pushed the pedal to the floor then you may have to pull the pedal back and then use short strokes until you get a hard pedal. This is normal. Now after you try pumping the brakes up and the pedal keeps going to the floor, then you either have a leak somewhere or the master cylinder has excessive debris inside it and caused the pistons to get damaged. You would need to replace the master cylinder. If you want to have this looked at in person before doing a repair, a certified technician from YourMechanic can come to your home or office to verify the cause of your braking issue first.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: The exhaust has a leak. Could that be expensive to fix?

As you know, parts and labor can vary in price tremendously depending on the shop, the skills of the mechanic and many other factors. I would suggest having an expert from YourMechanic come to your location to perform a pre-purchase...

Q: Shaking while braking

Hello. I’ve had experience with new rotors being warped right out of the box. There is a limited warranty on the rotors from the store. If you can return them and get new front rotors or get them turned, that...

Q: Brake Caliper sticking?

The excessive heat may suggest that you may have a caliper sticking or otherwise not releasing from the rotor when letting off the of the brake pedal. When this happens, as you know this creates an intense amount of heat...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.