I HAVE A LEAK IN BRAKE LARGEST RESIVORE, WHAT IS PROBLEM?

Unbolt the master cylinder and see if it is leaking into the booster.

well, if fluid is going down. then you have a leak. either in the brake lines or a bad wheel cylinder. if you can not see the leak. have someone push on brake while you look under the car. if the lines you will see it spray out. but if you do not see anything check for brake fluid on the inside of back wheels if it has drum brakes in the back, this means a brake cylinder is bad.

You have low or no brake fluid...check the brake fluid resivor. good luck

It is mounted on top of the master cylinder, which is mounted to the brake power booster, bolted to the firewall on the driver side of the vehicle. Should be a white plastic container with a black lid.

hello, check make sure, emergency brake handle is all the way down, check brake fluid, usually when light comes on you are low on brake fluid, also have front brakes,rear brakes checked out, you may need new brakes on front or rear, make sure there is know brake fluid leaking from your master cyclinder under the hood where you put fluid in brake resivor

You probably have a rusted out hole in one of your brake lines. Put fluid in the resivor, look under the car while someone steps on the brakes to find the leak.

The only way that the fluid would get out is if the cups are bad in the brake cylinder or the adjuster on the break shoes has locked up and fallen off. You would hear a grinding noise if that happens. Also look at your break fluid resivor to see if it's low in the small side that will tell you if it has been leaking.

Bad brake line somewhere or bad brake cylinders. The extreme braking you did to avoid the truck poped a weak brake line "most likely" or brake cylinder.

have you checked the brake fluid resivor or do you notice any leaks

check rear wheel sylinders for moister. an indicator for a leak. replace it then bleed brakes. refill resivore should be fine then. check front calipers also or leaking line.