Bleeding Brakes

Guest

Thanks again for the brake booster info. My main problem is I can't get any peddle pressure after I installed a new Wilwood master cylinder and brakes. I have adjusted the push rod in the booster at least 4 times and I must have bleed the brake lines 10 times already(at least my wife gets some exercise pushing the brake peddle). The peddle does not pump up there just is no brake pressure. Does anyone have any advice on what it might be?

Attachments

Hide

Images (1)

5/11/085:22 PM

❤️ 0

Original Post

Replies sorted oldest to newest

Pant5761 (Guest)

I had this problem after installing a Hall supplied master cylinder some years ago. I adjusted the rod a dozen times before I got any brake response. It was either too long or too short. Finally got it by trial and error. Then I had to bleed the brakes...long story short - I had to by a vacuum brake bleeder before I got all the air out of the lines. Pumping the pedal did not push all the air out.

5/11/085:32 PM

❤️ 0

demopuarMember

Did you bleed the master cylinder before you installed it in the car? It bleeds the rest of the system a lot easier if you bleed the master first. All you do is have some short pieces of either brake line or hose and run it back into the resevoir. You pump it until there is no more air coming out. Then you know there is no air in the master and it does bleed a lot easier for the rest of the car's brake lines.

5/12/0812:40 PM

❤️ 0

detroitmasoMember

I agree with Pant5761. Get a vaccuum bleeder, it was the only way I could get all of the air out of my system after a total rebuild.

Good luck,

Ian

5/12/084:20 PM

❤️ 0

comp2Member

I use a vacuum pump and a tank. It makes for easy brake/clutch bleeding. In fact, I replaced a brake line this past weekend and it took about 5 min to bleed from the Brake caliper.

I need an updated photo. I used to go back and forth. Latter I added the vacuum line to the other end of the tank.

5/12/084:29 PM

❤️ 0

72red (Guest)

I can't comment on the vacuum bleeder as I have never used one except that I would be concerned that you pull air into the system. I use a Motive power bleeder that forces brake fluid through the system via pressurizing the master cylinder resevoir and refilling it as fluid goes through the brake system. You pressurize it by hand and there is a gauge. I did have to bleed it twice to get all the air out which I think is more a function of my technique (unsure which corner to do first and for how long). I assume your wife is holding pressure the entire time you are opening and closing the bleeder valve. The power bleeder eliminates the need for one's wife

5/12/084:59 PM

❤️ 0

comp2Member

quote:
Originally posted by 72red:
I can't comment on the vacuum bleeder as I have never used one except that I would be concerned that you pull air into the system. I use a Motive power bleeder that forces brake fluid through the system via pressurizing the master cylinder resevoir and refilling it as fluid goes through the brake system. You pressurize it by hand and there is a gauge. I did have to bleed it twice to get all the air out which I think is more a function of my technique (unsure which corner to do first and for how long). I assume your wife is holding pressure the entire time you are opening and closing the bleeder valve. The power bleeder eliminates the need for one's wife

Actually no, no one needs to be on the brakes with a power bleeder. No air is introduced. I had a pressure bleeder once but I wasn't watching it close enough and emptied the MC and had to start all over.

5/12/085:19 PM

❤️ 0