Skip the auto shop - Our mechanics make house calls

Q: Brakes out hitting hole

asked by on

I hit a small pot hole in the road and applied my brakes, but they went all the way to the floor! I pumped them over and over and they still wouldn't hold. The brakes were completely out. I managed to drive home OK, and the next day the brakes worked normally. A few months later the same thing happened when I hit a bump then stepped on the brakes. But this time they didn’t go back to working normal. I went ahead and bled the brakes with a pneumatic bleeder. If I pump the brakes 3 or 4 times my brake pedal works. But by the 5th time they go to the floor. It now stops OK with the little brake pedal I have, but something is definitely wrong. Do you have any ideas?

A: Hi there, thanks for writing in about your ...

Hi there, thanks for writing in about your 2000 Ford E-250. Some master cylinders will let in just a little bit of air when the fluid is splashed around too much in the reservoir, which is likely what has happened to yours. The only way to really combat this is to make sure you have a good master cylinder cap and to try to keep the fluid above the max level so the air wont even have the space to move inside of the master cylinder. To add more assurance that the air did not get in any other way, check the master cylinder and other hydraulic brake components for leaks.

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: not starting filling tank

Hi! The symptoms you are describing for your 2013 Ford E-250 sound like that of a vacuum leak leaking intake manifold gasket. I suggest that you have the intake manifold tested with the smoke machine. Doing so will test your...

Q: Truck dies while driving - 2000 Dodge Dakota

Hello. You may have several issues at once contributing to the stalling. You will want to start by having the vehicle scanned for diagnostic troubleshooting codes. This can be done by a mechanic or at most local auto parts stores....

Q: my ASB light

I am assuming that you are talking about you ABS light for your antilock braking system. You will need a slightly advanced computer scan tool to read the codes stored in the computer. From there, additional diagnosis can be performed....

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...