my car isn't braking

[swk_cb7]

Hey, I replaced my rear brake calipers witha prelude and now it's not braking. I check to see if the calipers was ceased (good). So, I bought a master cylinder and the brakes got really hard until I started the car. It's stopping slightly. Is there more air in the line?

[mndude07]

Hey, I replaced my rear brake calipers witha prelude and now it's not braking. I check to see if the calipers was ceased (good). So, I bought a master cylinder and the brakes got really hard until I started the car. It's stopping slightly. Is there more air in the line?

Did you bleed all four corners and the master cylinder?

[swk_cb7]

I bench bled the master and I just bled the brakes rr,rl,fr,fl. The brakes is really hard when it's off. Then when I turn it on it goes soft. I removed the vacuum valve on the booster and plugged it and the pedal stayed hard; although it didn't brake better. So, I'm thinking the booster, maybe?

[mndude07]

I bench bled the master and I just bled the brakes rr,rl,fr,fl. The brakes is really hard when it's off. Then when I turn it on it goes soft. I removed the vacuum valve on the booster and plugged it and the pedal stayed hard; although it didn't brake better. So, I'm thinking the booster, maybe?

No, that sounds normal. You could check the vacuum on the booster though. Otherwise look for leaks? Maybe your pads suck?

[swk_cb7]

No, that sounds normal. You could check the vacuum on the booster though. Otherwise look for leaks? Maybe your pads suck?

What do you mean check the vacuum? I didn't see any leaks. The only thing I noticed when I took the mc off the paint was peeling under it. So, I chalked it up to the master leaking

[mndude07]

What do you mean check the vacuum? I didn't see any leaks. The only thing I noticed when I took the mc off the paint was peeling under it. So, I chalked it up to the master leaking

You can connect a vacuum gauge to the booster to check it. The OEM Honda manual has the details.

[dbales]

If it feels hard and no matter how hard you press the brakes it still feels like it isn't stopping, its probably the booster.

Had this happen to my moms cb. You could drive it and damn near stand up the brake and it wouldn't stop for crap. Replaced booster and master cylinder, problem fixed.

[swk_cb7]

I'm just going to replace the booster. I'm sure i need a new one anyway. Then, i'll let you guys know. Thanks

[mitsubishiv5]

i would rebleed the braking system with a friend who can help you push the fluid out, also bleed the brakes with the car off. once youve done that again, let me know how it goes.

[swk_cb7]

I've done that. I bled the brakes three times and it hasn't improved at all, except the slightest bit when i changed the master. I bought a booster yesterday. So, i'll put it on tomorrow and bled the brakes one more time.

Will a faulty abs system make the car do this too?

[sonikaccord]

Does your pedal go to the floor?