Skip the auto shop - Our mechanics make house calls

Q: Brakes want bleed has a new master cylinder don't know if booster is bad

asked by on

Brakes want work it has new master cylinder new lines but pedal goes all the way to floor could it be break booster
My car has an automatic transmission.

A: The master cylinder should be bench bled fi...

The master cylinder should be bench bled first or you may not be able to bleed it out. The other thing to check is to make sure the pin did not fall out when changing the master cylinder. The pin was in the brake booster and should be adjusted for the new master cylinder to make sure it will reset after each stroke. If you want to have this looked at and repaired, a certified technician from YourMechanic can come to your car’s location to diagnose your brake system and perform appropriate repairs or adjustments.

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: Front wiper stopped working and is making a ticking noise

Hi there. From the description you have given, it would appear, the front wiper motor may still be operating. The ticking noise could be, the motor turning and wiper linkage is disconnected. You could attempt to get a visual through...

Q: AC still run when I turn the truck off and it blows sometimes and sometimes not

Hi there. It sounds like you have a bad blower resistor. You should replace this first and then see if the blower motor is still blowing intermittently. If it is, this would mean the blower motor is bad and there...

Q: Lost half a tank of fuel in less than 2 miles. the tank is empty. can't see a leak

I would first get a 5 gallon gas can and put it in the tank to see if gas gauge registers the fuel. Then turn on the key and listen for fuel pump operation to see if pump runs. Recheck...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...