If there is no fluid coming from the brake line, there are two possibilities: 1. there is no damage in the brake line, merely air in the brake line. 2. The brake fluid may already be completely depleted.
To find out, get some water with a bunch of dish soap in it, but try not to make a lot of suds. Pour the water over the whole brake line and watch the line while someone pumps the brake pedal. If bubbles form, then there's the hole. No bubbles? Air in the line or perhaps damage in the master or slave cylinder.
Master Brake cylinder replaced and lines bled-how long?
Check the wheel cylinders - they may be leaking and you can't see it on the outside of the wheel
The brake master cylinder has nothing to do with the way the car runs. It certainly wouldn't cause it to stall.....Maybe the brake booster?
Air in a brake line or a bad master cylinder could cause this. Bleed the brake lines if you have been working on any brake cylinder. If this happened without any warning, the master brake cylinder is probably the cause and should be replaced.
If it's a right hand drive, it's just to the left of the brake booster. There is a hose coming off the left of the brake master cylinder, follow that and you will get to the clutch master cylinder - it looks similar to the brake master cylinder but smaller. If it's a left hand drive, it should be the reverse.
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.
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 brake fluid will destroy a master cylinder and this may be why it failed.Brake fluid leaking from the master cylinder. When you stop and hold your foot on the break the brake pedal will slowly go to the floor. Either of these symptoms means your master cylinder must be replaced.
More than likely low brake fluid level in the master cylinder. Check it.
Defective Master cylinder?
A brake master cylinder? If you are losing brakes or brake fluid.
The master cylinder seals are worn out. Have it replaced soon, very soon!
It can be attached to the bottom of the master cylinder or on the drivers side frame between the firewall and the radiator. Follow the brake lines coming out of the master cylinder.