Defiantone

iTrader: (2)

A few days ago I changed the back right caliper it changed easy and bled fine. I took the car in for a safety and I was told the left caliper e brake was seized so I had to change it. I changed the caliper quick it was fine yesterday and than I went to bleed to it tried for an hour nothing keeps spitting air then we tried the other side air in that too. The fronts work. We went back and forth from side to side bleeding still air. No visible leakage that we could see. Any ideas? Please help.

Defiantone

iTrader: (2)

Sorry I should of been more specific its an 86 fc with stock 4 bolt and just regular calipers

Go48

iTrader: (7)

Did you run the fluid low in the master cylinder when first bleeding the right caliper? If not, check all the lines from front to back for leaks. Not just the connections, but the hard lines that run under the car from front to back as well. Sure sounds like there is a leak somewhere.

Defiantone

iTrader: (2)

I did run the master low I have checked all the lines no leaks

Go48

iTrader: (7)

If you ran the master cylinder too low you probably let air into the system. It'l take lots of bleeding to get rid of it if that is the problem. Bleed right rear first, then LR, RF and finally LF.

Aaron Cake

iTrader: (1)

Note there are two bleeder screws on the FC rear caliper. Use the upper screw. It always takes me two attempts to get all the air out.

Gene Wollen

Most likely ran the master cylinder dry.

Handful

iTrader: (1)

You probably have air in the system. One of the best ways to blees a system is gravity. Fill the reservoir up with fluid and let it drain out of the bleeder. Close the bleeder when there is no more air. Also Make sure your bleeding your brakes properly. Start with the farthest from the Brake master Cylinder and work your way to the closest. So RR, LR, RF, LF. Bleed the whole system.

If the gravity bleed doesnt work get a friend to hit the brakes for you as you
Open the bleeder to get fluid out. then close the bleeder and then let off the brakes.

wolfwood09

thanks for the info on this..

Defiantone

iTrader: (2)

I tried all those things gravity bleed everything. Someone told me there is something in the proportion valve that can stick so that is what I am gonna try next been trying everything for 3 days. I even changed the master.