Can someone help me about bleed the brakes? Please help! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-04-2009, 01:51 PM   #1
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Default Can someone help me about bleed the brakes? Please help!

I had a damaged brake line that leaked so I replaced a small section of it. It was for the rear passenger side. While bleeding that brake drum, I had my wife pump up the brakes while I opened the bleeder. We did it several times. We did it until air quit squirting out and when I opened it, only fluid came out and the brake began working.

Now, my questions are, how do i know how much I have to bleed the brake line? Does the pressure of pressing the brake force the air to the ends of the lines so it can escape? Or is it possible I could still have air trapped in the middle of the line somewhere close to where it was fixed? Just how much should I bleed out? Like I said, air quit spitting out and when I push the brakes now, they feel like a full brake.

Also, I decided to bleed the driver rear also, even though it was never opened, and when I opene the bleeder it just shot out fluid, no air.

So, my next question is do I need to bleed ALL the brakes even though I only had one line opened to work on? Do I need to bleed the front as well?

So.....
1. how do I know that the brake line has been bled sufficiently?
2. Do I need to bleed all the other brakes as well?

Thanks in advance. Please help. This car has to be dependable to get me back and forth to college and for driving my kids sometimes. brake failure is unacceptable. haha
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Old 01-04-2009, 01:55 PM   #2
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If the peddle feels firm and needs no pumping, the brakes are fine. If it feels mushy, then there could be some air in the line. As long as your master cylinder is full the rest of your lines should be fine.
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Old 01-04-2009, 03:30 PM   #3
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Quote:
Originally Posted by Danthurs View Post
If the peddle feels firm and needs no pumping, the brakes are fine. If it feels mushy, then there could be some air in the line. As long as your master cylinder is full the rest of your lines should be fine.
Yeah, the peddle feels good and firm, and it doesn't slowly lower to the floor or anything. When you push it, it is firm and stays right where it'* at, and the master cylinder is full. Thanks.

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Old 01-04-2009, 03:40 PM   #4
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Then I think your lines are fine and need no more bleeding.
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