1994 Cadillac Deville How to bleed brake line

TORRENCE

MEMBER
1994 CADILLAC DEVILLE
V8
2WD
AUTOMATIC
120,000 MILES

I have just replaced the rotors and pads on the front end but my brakes are still not operating correctly. The brake peddle still goes to the floor. I suspect that I have air in the line but I dont know how to go about bleeding the line. Can you tell me what to look for?

Wednesday, December 19th, 2007 AT 5:31 PM

3 Replies

MERLIN2021

MECHANIC
17,250 POSTS

Take the cap off the master, any fluid in it> if not fill it then watch for a leak. Is the tires wet on the inside on any wheel? And last, did you pump the pedal to position the caliper pistons?

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Wednesday, December 19th, 2007 AT 5:47 PM

TORRENCE

MEMBER
2 POSTS

I have done everything you suggested without any success. I dont believe there is a leak the brake fluid is at the same level. I have pumped the peddle it feels like there is just a big rush of air. Is there a valve I can open to let the air out and if so what does it look like? Thanks for any and all help.

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Wednesday, December 19th, 2007 AT 6:17 PM

MERLIN2021

MECHANIC
17,250 POSTS

If you did not change any hydraulics, and the pedal goes to the floor, You probably need a new master cylinder. That is if there are no leaks! The other quistion is what color is your fluid? Remove some, put it in a cup, add water, should turn milky, with NO oil bubbles floating on top, I assume only BRAKE fluid was used? I have seen people put tranny fluid in thier brake systems. NOT GOOD!

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Thursday, December 20th, 2007 AT 8:27 AM