BRACK TROUBLE
Thread Starter
|
Posting Guru
Joined: Mar 2010
Posts: 1,781
Likes: 6
From: WEWAHITCHKA FL.
BRACK TROUBLE
My bracks are acting up. I bleed them 4 times already. I get a full pedal then after i drive it it will bottom out and i have to pull it up with my foot.I like to got hit 2day . I couln't stop at a red light . I have a firewall mounted filler and the master is under the truck. Could it be sucking air from up top ?
Posting Guru
Joined: Dec 2008
Posts: 2,352
Likes: 1
From: Waleska, GA
It sounds like you have a leak somewhere, or a bad master cylinder. Trace all of your hard lines and pull the wheels to check calipers/cylinders. If you haven't found the leak, I'd replace the master cylinder. You might also want to make sure your "emergency" brakes are up to snuff. If none of that does any good, double up on you insurance and make the horn louder! 
Thread Starter
|
Posting Guru
Joined: Mar 2010
Posts: 1,781
Likes: 6
From: WEWAHITCHKA FL.
ok then
LOL Every thing is new carnut. I parked it on my new slab under my shed and there was no sigh of a leak. Traced the lines 2day and they are dry. Monday i will get it up on the leaft and go over the whole system. Sorry bout the spelling teach. I think i remember you saying you were a teacher. RIGHT ?
Elder User
Joined: May 2006
Posts: 907
Likes: 1
From: Kansas City, Mo
Are your calipers height above the master cylinder? If so you may need residual valves to prevent bleed back. I have also seen people use the wrong size rod that enters the master cylinder. If the rod is to narrow it can eventually cause a crack and air will enter the master cylinder through the rod hole. I don't know if you can overfill your master cylinder using a upper filler. How do you know when it is filled to the proper height? Is the master cylinder made for Disc/Disc system? It makes a differance. Describe your system. chuck
Elder User
Joined: Nov 2010
Posts: 581
Likes: 2
From: Byron Bay Australia
I just helped a friend with a 32 2 window with the exact same problem, fitted some residual pressure valves and....problem solved. All the so called experts at the brake shops couldnt solve it, but if the master is on the frame 90% of the time that solves the problem. And they are only cheap too........
john
john
Cargo Master
Joined: Aug 2004
Posts: 2,575
Likes: 36
From: Greenville, SC
It sounds like a residual pressure valve issue to me as well. Follow this link and it explains what they are and if you need them. Hope this helps.
ECI Hot Rod Brakes and Brackets Brake Facts
ECI Hot Rod Brakes and Brackets Brake Facts
Thread Starter
|
Posting Guru
Joined: Mar 2010
Posts: 1,781
Likes: 6
From: WEWAHITCHKA FL.
DISK TO DISK
Are your calipers height above the master cylinder? If so you may need residual valves to prevent bleed back. I have also seen people use the wrong size rod that enters the master cylinder. If the rod is to narrow it can eventually cause a crack and air will enter the master cylinder through the rod hole. I don't know if you can overfill your master cylinder using a upper filler. How do you know when it is filled to the proper height? Is the master cylinder made for Disc/Disc system? It makes a differance. Describe your system. chuck
This is driving me crazy.
HELP
Trending Topics
Cargo Master
Joined: Aug 2004
Posts: 2,575
Likes: 36
From: Greenville, SC
A disc disc system will have 2 reservoirs that are the same size on the master cylinder. Disc/drum has a big and a small.
Have they worked before and just started having trouble?
If they did it sounds like the master cylinder is leaking. If they didn't, it sounds like the master cylinder needs to be bench bled. Both of these are assuming there are no leaks at the calipers and you have the residual valves.
Have they worked before and just started having trouble?
If they did it sounds like the master cylinder is leaking. If they didn't, it sounds like the master cylinder needs to be bench bled. Both of these are assuming there are no leaks at the calipers and you have the residual valves.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Fleet Owner
Joined: Dec 2000
Posts: 25,405
Likes: 5,416
From: Central PA
My bracks are acting up. I bleed them 4 times already. I get a full pedal then after i drive it it will bottom out and i have to pull it up with my foot.I like to got hit 2day . I couln't stop at a red light . I have a firewall mounted filler and the master is under the truck. Could it be sucking air from up top ?