Skip the auto shop - Our mechanics make house calls

Q: Master cylinder going bad

asked by on

I think my master cylinder is going bad. How can I tell?

A: The master cylinder may be going bad if you...

The master cylinder may be going bad if you notice the pedal going down to the floor with no signs of any brake fluid leakage, or if the master cylinder is leaking fluid from the back of it into the brake booster. These are the two most common problems encountered with a master cylinder that would require replacement. I recommend you have a mechanic, such as one from YourMechanic, check your vehicle out for you and replace the master cylinder, if needed.

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: Car starts and headlights work, nothing else

The component that would be common to all systems working would be the ignition switch. Since most accessories like radio,heat,etc, are "key on" circuits - generally only when the key is in the On position. The ignition switch can be...

Q: why turn VSA switch off

Hello. The VSA system on your vehicle is for vehicle stability control. You will want to leave this on pretty much all of the time. The only reason why some people will turn this off is under certain driving conditions....

Q: Car only runs in cold, shutting off when it gets hot.

It sounds like you have an overheating issue. Some vehicles will shut off automatically if the engine reaches too high of a temperature. I would first recommend having a cooling system pressure test performed on the vehicle to make sure...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...