i got an 88 civic when i got the car the brakes sucked went to the floor but enough pressure to stop,so got it home checked the brake lines for leaks (none found).Next I changed the master cylinder,bled the master cylinder then bled all the brake lines.Now when I go down the road after I hit the brakes it goes straight to the floor,hit'em again amazing the car begins to stop.So got the car home hit the gas then hit the brakes pedal to the floor hit the brakes again brakes began to get stiff.So checked the brake booster seems to be no problems there anyone have any suggestions to my problems it would be greatly appreciated thanks vadriven!!!!!!!

 

Did you bleed the lines according to the order of the wheel as described in the shop manual? I dont have access to it now but the idea is to 1st bleed the corner FARTHEST from the booster. If you didnt you might still have air in the lines.

The 1st time I did a brake job, I had all the lines open and when I started the car, the pedal went all the way to the floor until there was enough vaccum to the booster. A bit different from your situation that comes and goes.

 

anytime i do a master cyl i open all the bleed points and let it gravity bleed for a little while. once you start bleeding and think you got all the air out, bleed them more. it takes a bit to bleed brakes when the master cyl is being replaced.

 

rear disc? or drum?

 

drum,and yeah i gravity bled it but im boggled never had this happen before.Thanks for all the insite guys.

 

Defently rebleed your master cylinder!

 

did you check everything twice?

 

checked everything twice bled the master cylinder again bled the brakes again same results.now i'm about done with the car,just losing interest very fast.

 

Have you checked out the pads to see how worn they are? It's possible that the pistons have to move a considerable distance for the pads to contact the rotors, so it's taking a bit of fluid volume to fully move them. Far fetched, but possible.

If you have air in the system, you usually know it because the pedal feels spongy no matter what.

Are you losing fluid at all?

 

No fluid that I have seen,the pedal is going all the way down when u go to brake intially then u hit them agin and it starts to gradually build pressure and start to stiffin up