Brake bleeding error
Thread Starter
|
New User
Joined: May 2007
Posts: 12
Likes: 0
From: Richmond
Brake bleeding error
2000 6.8L V-10 206K miles
Long time lurker and searcher, but don't post often unless I need some expert advise.
I had a caliper seize and decided to replace both front calipers. Attached brake lines to new calipers and opened bleeder valves to gravity fill. Here is where I made a boneheaded mistake. I forgot to close my passenger side bleeder before I started flushing/bleeding from the rear wheels.
I was using pnumatic bleeder which was working well and pulling a good vacuum until I started getting a lot of air bubbles. I finally realized that the front bleeder was open and closed it. Proceeded to bleed again and ran about a quart and half before I ran out of daylight. I finished what I could and decided to test the truck. Brakes are MUCH stronger now but my pedal feels too soft and makes a whoosing sound when depressed.
Here is my question:
Do you think I can continue to bleed the system and get all of the air out? Or did I pull air into somewhere that needs to be professionaly bled? I'm concerned that I got air in the master cylinder and I won't be able to bleed it.
Thanks in advance,
Nik from Richmond, Virginia
Long time lurker and searcher, but don't post often unless I need some expert advise.
I had a caliper seize and decided to replace both front calipers. Attached brake lines to new calipers and opened bleeder valves to gravity fill. Here is where I made a boneheaded mistake. I forgot to close my passenger side bleeder before I started flushing/bleeding from the rear wheels.
I was using pnumatic bleeder which was working well and pulling a good vacuum until I started getting a lot of air bubbles. I finally realized that the front bleeder was open and closed it. Proceeded to bleed again and ran about a quart and half before I ran out of daylight. I finished what I could and decided to test the truck. Brakes are MUCH stronger now but my pedal feels too soft and makes a whoosing sound when depressed.Here is my question:
Do you think I can continue to bleed the system and get all of the air out? Or did I pull air into somewhere that needs to be professionaly bled? I'm concerned that I got air in the master cylinder and I won't be able to bleed it.
Thanks in advance,
Nik from Richmond, Virginia
Junior User
Joined: Oct 2007
Posts: 60
Likes: 0
From: Pompano Beach
I could be wrong, but with your pressure bleeder you should be able to bleed all of the air out of the system. Haven't done it before on the Ex, but had almost the exact same thing happen to my '81 F-150 in high school.
Super Moderator
Joined: May 2004
Posts: 29,380
Likes: 118
From: Central Coast of CA
Stewart
Thread Starter
|
New User
Joined: May 2007
Posts: 12
Likes: 0
From: Richmond
Ok, thanks for the responses. I will continue to bleed the lines and I'll update my results. Stewart, I've seen those bleeding instructions on this site. I guess pressing the brake pedal will expel all of the air from the waste line and will suck up the new fluid in the bottom of the waste container when the pedal is released. I'm nervous that air will be sucked back in with the cycling of the brake pedal. I will likely give it a try since it seems to have worked well for others on this site.
Nik
Nik
Super Moderator
Joined: May 2004
Posts: 29,380
Likes: 118
From: Central Coast of CA
When you press the brake pedal, you're pushing the new fluid from the master cylinder brake reservoir through the brake lines. That pushes the old fluid (and any air trapped in the lines) out through the brake bleeder.
The new fluid isn't replenished into the brake system from the brake bleeder. It's replenished from the master cylinder reservoir.
Stewart
Thread
Thread Starter
Forum
Replies
Last Post
1Tonn
1987 - 1996 F150 & Larger F-Series Trucks
18
May 23, 2011 09:23 AM
cookieman69
1948 - 1956 F1, F100 & Larger F-Series Trucks
6
Aug 30, 2010 09:04 AM
yankeerebel
1973 - 1979 F-100 & Larger F-Series Trucks
3
Jun 8, 2009 03:16 PM
Keahi73
1948 - 1956 F1, F100 & Larger F-Series Trucks
9
Aug 27, 2003 11:44 PM
