Skip the auto shop - Our mechanics make house calls

Q: I poured seafoam in my brake booster I thought it went there instead of in the vacuum

asked by on

I poured the seafoam in the brake booster its been about two weeks now NY brakes are going to the floor and hissing what should I do
My car has an automatic transmission.

A: Hello, the brake booster assembly will have...

Hello, the brake booster assembly will have to be replaced. There are rubber diaphragms that degrade from seafoam. The hissing sound is a vacuum leak with the booster. I recommend having a certified YourMechanic technician come to your location to replace the brake booster.

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: I can't keep fuel from ejecting out of disconnected fuel line.

Hi There, I would suggest using a plug or crimping off the line until reconnecting the hose. The line coming from the fuel tank should not be pressurized, so you should not have any trouble crimping this off. If you...

Q: Squishy brakes

Hello. If your ABS light is on, then I would scan it for trouble codes, as they will likely reveal some insight on what the issue may be. If the master cylinder and booster have been properly bled, and the...

Q: Sunroof not closing

The loud noise might have come from the track. The sunroof is run by an electrical motor and slides on a track, much like a power window runs on a regulator. The tracks are made of hard plastic. The plastic...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.