you can buy a rebuild kit at your local parts store but it is usually cheaper to just replace the master cylinder!
how do you fix a gas guage on a 1989 ford aerostar
Put a new master cylinder on. Throw the old one away.
Replace the master cylinder.
A master cylinder? Mate don't bother.
Take it somewhere and get somebody that knows shat they're doing to fix it.
Begin by removing the brake lines. Remove the master cylinder retaining bolts. The master cylinder will come off. Reverse the process to install a new master cylinder.
If the Master Cylinder is defective then replace it.
Whether it be a Wheel Cylinder or a Master Cylinder, if it leaks, it should be replaced.......back in the old days we used to rebuild them, but the parts are cheap enough today to just replace them. Vaya con Dios, Chuck, CABGx3
The fluid is leaking from the master cylinder and running back towad the pedal. Replace the master cylinderanswerchange master cylinder and slave properly then bleed the system properly.
start with wires
For your own safety replace, do not repair
error po 300 on ford f250