What is the cause of low or no brake pedal pressure on a 1964 Thunderbird when the master cylinder and all the lines have been replaced and bled?
I know you may think I'm wack, but you didn't mention brake fluid?
Check your flex lines too...make sure they're not bulging when you press the pedal down. That'll cause the brakes not to work for sure. You mentioned that all the lines are new, but there are rubber flex lines....especially the one just forward of the rear axle. If they're weak or leaking, that could cause a low or no brake condition.
If the brakes work fine, but just seems like the pedal is too soft...or even too touchy, look at the brake booster, vacuum lines to the booster, and the vacuum connections on the booster. A bad booster can make the brakes feel too touchy or soft. These are just ideas from things I've run into on my own 64.
One more thing, make sure you keep your rear brake linings up to snuff and your emergency brake adjusted; if your master goes bad or your brake fluid gets too low, the brakes are gone completely...and you'll have to use the emergency brake to stop the car. Hope this helps.
You replaced the master and slave cylinder for your clutch on your Nissan 240 sx and there is no pressure?
What does it mean when there is fluid dripping from the master cylinder and the petal goes all the way to the floor?
Why does the brake pedal still go to the floor even after bleeding the brakes on a 99 Mercury Villager If I pump them they will work but after sittin for a small length of time it feels spongy again?
leaking brake line or master cylinder..? It sounds like a bad master cylinder. Years ago these could be re-built, but with the newer ones, they must be replaced. By pumping the brakes, you build up pressure which prevents the piston in they master cylinder from leaking, cut after sitting, the seals leak again. A good mechanic will be able to tell if it is the master cylinder or not.
You ONLY lose brake pressure if you have a leak somewhere ! - This can be in any wheel cylinder , the master cylinder, or a fractured brake line. Till you find the leak, keep your master cylinder topped up daily. If the brake fluid reservoir remains full and the brake pedal sinks to the floor as you are waiting at a stop light, the master cylinder is at fault.
The primary difference between a master and a slave cylinder is which one make the other one work. We operate the master cylinder to make the slave cylinder work. The master cylinder on a hydraulic clutch is actuated by pushing on the clutch pedal. The hydraulic pressure then makes the clutch slave cylinder move and it pushes out to give the throw-out arm a shove. This will disengage the clutch from the flywheel (by actuating…
If a pressure type brake fluid dispenser is available attach it to the top of the master cylinder. Other wise fill the master cylinder, start with the wheel cylinder that is furthermost from the master, and bleed until fluid comes out clean and free from bubbles. make sure to replenish the the master cylinder as needed. then proceed to the next farther wheel cylinder and repeat with the rest of the wheel cylinders. top off…
If the slave cylinder wont build up pressure and you've tried bleeding it and the master cylinder and the slave cylinder is good then what would make it not work?
a leak in the pressure line could do it. are you sure the seals in the cylnders are good? Is the slave not holding pressure, or is the master not building pressure? How did you bleed it? it makes a difference. Also, if the master or slave cylinders weren't bench bled before installation, it can take a very long time to bleed all of the air out of the cylinders.
Front brakes are dragging replaced pads rotors calipers and lines but brakes still drag what could it be?
How do you fix a Clutch on a 98 Model Z24 Chevy Cavalier when there is no pressure when you push it down?
A symptom you almost always feel is a brake pedal that will not hold. You stop, hold the brake, and the pedal will slowly move toward the floor. This is a sure sign the master cylinder is bad. A leaking master cylinder or one that sticks, is also a sign is is defective. When you replace the master cylinder replace all the brake fluid in the brake system and bleed the brakes. Moisture in the…
First, make sure the master cylinder is filled with brake fluid. If it is low, there may be a leak somewhere in the brake lines or a brake cylinder. If the master cylinder is bad, you can normally pump the brakes up, but the pedal will slowly sink to the floor again. The master cylinder needs to be replaced or repaired.
94 Jeep Wrangler Sahara clutch pedal is sticking in the up position and sporadically will not depress what could cause this?
Master cylinder common failure, can be replaced with a cheap trailer brake cylinder. Master cyliner may just need adjusting, there is an adjustable rod that goes from the top of the pedal into the master cylinder, this is visible if you open the bonnet (hood) and undo the 6 screws that are on top of the clutch pedal box. Slave cylinder failure common
The master cylinder can be easily replaced with a new unit, by disconnecting the brake lines, capping off the brake lines, detaching the old master cylinder by unscrewing two bolts. You must bench bleed the new unit before installing. Then reverse the above. Protect surfaces from brake fluid spillage.
To try to make it simple, your typical vehicle has a master cylinder and four slave cylinders, one for each wheel. With the help of your foot, the master cylinder sends pressure via hydraulic fluid though lines to the slave cylinders which inturn operate the brake linings to do the work of stopping the vehicle.
How do you bleed brakes on a 2001 Saturn sl1 Pedal goes to floor replaced master cylinder and cannot get pedal up even after bleeding?
If you just replaced the clutch master cylinder on a Nissan 240sx then why won't it build up pressure?
Several different things can go wrong with a master cylinder! It could leek witch is obvious, it could suck in air witch usual can be found by finding continuous air at the bleeders or it can also just not build any pressure. with no pressure it can come and go so it is hard to find but after excessive bleeding and if you have no leeks and your are sure the brakes are not out…