Help bleeding brakes :(
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Joined: Jun 2002
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Help bleeding brakes :(
I just recently replaced my master because the pedal was going halfway to the floor. Even after bleeding the system.
So I replaced the master. But it appears that I have a air trapped somewhere. The brakes are not like they were before I replace the master . They do feel better and I can get a real firm pedal with the car off as soon as I start the car the pedal turns to mush.
I've used a Motive pressure bleeder to bleed the brakes more times than I can count. I've taken the car out and hammered on the brakes to get the ABS to engage and then bought it back in the garage and bleed them again.
I tried to use Vag-Com to cycle the ABS but apparently that can't be done on my year. I can connect to the ABS unit but connot find any channels to connect to. After searching it looks like cycling the ABS with Vag-com only works on the newer cars.
The only thing I haven't tried is to do the two man brake bleed...but I'm a little fearful of doing that because I don't wanna blow another master cylinder. I think thats how the old one got damaged.
Anyone have any hints or advice? I'm completly stumped and fustrated. I have a apointment at Anderson Motorsports next Tuesday unless I can get this resolved before then.
So I replaced the master. But it appears that I have a air trapped somewhere. The brakes are not like they were before I replace the master . They do feel better and I can get a real firm pedal with the car off as soon as I start the car the pedal turns to mush.
I've used a Motive pressure bleeder to bleed the brakes more times than I can count. I've taken the car out and hammered on the brakes to get the ABS to engage and then bought it back in the garage and bleed them again.
I tried to use Vag-Com to cycle the ABS but apparently that can't be done on my year. I can connect to the ABS unit but connot find any channels to connect to. After searching it looks like cycling the ABS with Vag-com only works on the newer cars.
The only thing I haven't tried is to do the two man brake bleed...but I'm a little fearful of doing that because I don't wanna blow another master cylinder. I think thats how the old one got damaged.
Anyone have any hints or advice? I'm completly stumped and fustrated. I have a apointment at Anderson Motorsports next Tuesday unless I can get this resolved before then.
Tech Guru
Joined: Mar 2003
Posts: 6,006
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Questions
Did you use the motive full of fluid, or just to apply air pressure? Fill it.
How much pressure (PSI) did you use? I'd use ~13-15 lbs.
I had no problem with the two man method when I got extra air in my system ( i did a stoopid thing...).
Grant
How much pressure (PSI) did you use? I'd use ~13-15 lbs.
I had no problem with the two man method when I got extra air in my system ( i did a stoopid thing...).
Grant
Tech Guru
Joined: Mar 2003
Posts: 6,006
Likes: 2
I dont know why you had trouble. In fact,
I just used it again this weekedn on my old C4 after replacing brake hoses.
Even though there was nothing "wrong" it was firmer afterward.
The fluid comes out very slowly though. It took me several minutes to drain the 150ml or so I considered necessary.
G
Even though there was nothing "wrong" it was firmer afterward.
The fluid comes out very slowly though. It took me several minutes to drain the 150ml or so I considered necessary.
G
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Joined: Jun 2002
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Re: I dont know why you had trouble. In fact,
I got some Speed Bleeders installed and bleed the system. Pedal feels about how it should now. I decided at the same time to pull everything apart and clean and lube the sliders and replace all the pads. Here's what I found when I pulled the front pads apart. I'm not sure if it was problem but I'm glad I caught it. <a href="http://smg.photobucket.com/albums/v92/burntaudi/?action=view¤t=BrakePads002.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v92/burntaudi/BrakePads002.jpg" border="0" alt="Photobucket"></a>
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