Skip the auto shop - Our mechanics make house calls

Q: my son replaced a brake line on my cadillac deville 2001 but he cant seem to bleed them properly

asked by on

needling help with bleeding brakes on my deville.. i have no garage just a driveway.. i need this car working soon as possible as i am single mother with no working vehicle... i also have a 1998 chrysler sebring with what i believe is a bad alternator.. put in a new battery but come to find out thats not the issue ..i also have a 1998 pontiac grand prix with leaky brake line. id just like to get the deville working so i have at least 1 car for winter.. Thank you.... Lisa L..

Sometimes replacing a brake line or hose can cause the brake system to become air-bound. Try gravity bleeding the brake system first. With the brake fluid reservoir cap removed and the brake fluid level correct, loosen the bleeder screw at the wheel that corresponds to which brake line or hose was replaced. DO NOT TOUCH the brake pedal while the master cylinder reservoir cap is removed. Allow gravity and atmospheric pressure to get the brake fluid to drip from the loosened bleeder screw. This can take just a few minutes or several minutes but be sure the brake fluid level does not fall below minimum or you will just be introducing more air into the brake system.

Once the brake fluid begins to flow at the loosened bleeder screw, re tighten it, top off the brake fluid, and reinstall the brake reservoir cap. If a vacuum brake bleeder is not available, then grab a friend to help manually bleed the brakes. Start at the right rear wheel, then left rear, then right front, then finally the left front wheel. Have your friend pump the brake pedal 2-3 times, then hold the pedal.When you loosen the bleeder screw, the brake pedal should drop and fluid should squirt out. Make sure your friend does not push the brake pedal to the floor when this happens. I usually place my left foot under the pedal to make sure that does not happen. Once fluid comes out, tighten the screw, then have your friend release the brake pedal and pump it again. Bleed each wheel 2-3 times or until air stops coming out. Be sure to frequently check the brake fluid level and do not let it get too low.

If this does not get the brakes properly bled, then it might be best to have a certified technician bleed and flush the brake system to make the vehicle safe to drive.

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!
  • Home
  • Questions
  • my son replaced a brake line on my cadillac deville 2001 but he cant seem to bleed them properly

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: The car starts then dies.

Hello there. In most cases, when there is a situation like yours when the car starts then dies, it's due to a fuel or ignition system failure. In some instances it is due to components like fuel injectors, Mass Airflow...

Q: Stabilitrak warning light

Hi There, It sounds like you may potentially have two separate issues going on here. The stabilitrak system is your car's traction control system as you may know. This will generally not cause the car to shut down completely, however...

Q: Motor/ Glove Compartment area is intensely shaking when i put my air at a certain point. Car does not turn off or idle.

Hi there. If a vehicle has not been in operation for quite some time, several things can occur that may cause this type of symptom. When an engine shakes or vibrates, it's typically due to one of three things. First,...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...