Skip the auto shop - Our mechanics make house calls

Q: Spongy brake pedal

asked by on

I was doing a front brake job on my 09 grand caravan and I noticed brake fluid coming out of the cap of the master cylinder when I was a pushing in the Pistons on the caliper with a C clamp. Was wondering if that could cause any of it damage the master cylinder because now it seems like I have a spongy brake pedal and increased stopping distance.

My car has 204000 miles.
My car has an automatic transmission.

A: You may have pushed some residue into the m...

You may have pushed some residue into the master cylinder and causing the pistons to not seal inside the master cylinder. You should bleed the brakes or have them bled to see if some air was introduced and bleeding will fix the problem. If bleeding does not help, then replace the master cylinder. If you would like, a certified technician from YourMechanic can come to your home or office to inspect your braking system.

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 will not accelerate when pulling out slow

The transmission of your Sunfire is definitely going into "limp mode," which is second gear only for this vehicle. Your Check Engine Light may also be illuminated; if so, get the codes scanned. They are relevant to this failure. There...

Q: Brakes go to floor and are squeaky...

The brake booster is a mechanism that uses vacuum pressure to take the force being applied to the brake pedal and amplify it. If the booster is bad, then the full amount of force needed to activate the master cylinder...

Q: Engine light on. P000B Code

Hello. When this code comes up it is because the computer is not detecting that the camshaft is moving as it should when the variable valve timing system is functioning. This can be caused by a number of things. It...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...