Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-5336-jd22v1js:136:3912)
    at m.mountComponent (/tmp/execjs20161208-5336-jd22v1js:47:15602)
    at /tmp/execjs20161208-5336-jd22v1js:49:31860
    at a.r.perform (/tmp/execjs20161208-5336-jd22v1js:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-5336-jd22v1js:49:31821)
    at r (/tmp/execjs20161208-5336-jd22v1js:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-5336-jd22v1js:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-5336-jd22v1js:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-5336-jd22v1js:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-5336-jd22v1js:173:8

Q: Brakes go to floor, I hear gurgling, and white smoke comes out of tail pipe

asked by on

After I replaced the front brakes on my F-150, and lowered the truck on the jack to drive away, I saw a LOT of white smoke blowing out of my tail pipe. Nothing smells burnt when this happens - no burnt oil smell or anything else, and water drips out the tail pipe. Another problem I noticed at the same time is that the brake pedal goes all the way to the floor when I'm braking, and when it gets to the floor, I can hear gurgling or bubbling. This is coming from behind the firewall approximately where the master cylinder is located. Also, once the brake pedal reaches the floor, more white smoke is coming out the tailpipe.

A: I think I know exactly what is happening. R...

I think I know exactly what is happening. Right behind your brake master cylinder is where the power brake booster is located. This booster is acted upon by engine vacuum in order to make the pedal easier to press down.

Since the booster is acted upon by engine vacuum, this means that it is connected to the intake manifold of the engine. If the rear seal in the brake master cylinder has failed, this will allow brake fluid to enter the power brake booster and would be the reason the pedal travels all the way to the floor; the rear seal is preventing any hydraulic pressure from building up in the master cylinder.

With brake fluid inside the power brake booster, the intake manifold is able to inhale the brake fluid into the engine whenever the brake pedal is depressed. This would be the cause of the white smoke. I would recommend having the brake master cylinder replaced, and having the power brake booster replaced by a certified mechanic. YourMechanic offers mobile technicians to come perform services just like this at your home or office.

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・Save up to 30%

Get a quote

What others are asking

Q: Only get hot air in front

The front and rear blend doors are electronic actuators that will click when they are bad and cannot detect the position they are in. This is a very common problem and the front A/C and rear A/C can have different...

Q: Temperature spiking up after I changed my thermostat trying to get my heater to work.

The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you know, the heater core...

Q: What does the park brake engaged warning mean in the message center?

Your car’s message center can provide you with a lot of important information about the various systems on your car, their condition, and more. If you see a warning message that says “Park brake engaged,” it most likely means that...

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...
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...