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..

A: Sometimes replacing a brake line or hose ca...

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?
Recommended services
Get a Quote

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

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 won't crank or start

You may have an issue with your neutral safety switch. This switch is what prevents the vehicle from being started while in gear. The switch may not be recognizing that the transmission has been placed in park but it will...

Q: I just bought a new battery for my 2007 Cadillac STS. I got my alternator and starter checked and both came back good. What could

Hey there. Starting systems are very simple. If your issue relates to it, it can only be a few things. Let me start with having the starter tested. When you take a starter in to get 'bench" tested, the test...

Q: Dodge Ram 1500 Van won't start

Hello. There are several possibilities for your van not to start, and it looks like you already put in a lot of effort towards repairing this. I recommend having a technician check the condition of the spark plugs. Also, I...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.