Brake pedal goes almost to floor

SAMTWEEDY

MEMBER
2002 ACURA RSX
2.0L
4 CYL
2WD
MANUAL
200,000 MILES

Had bad brake line. So I replaced it the bled brakes. Could not regain normal pedal. It will pump up but if you release it then press again it goes almost to floor. I then replaced master cylinder bench bleeding before installation. I then bleed brake system at ABS block then at each wheel in manufacturer's sequence. Pedal still goes almost to floor. I tried adjusting the push rod on the pedal and no luck there. I checked for leaks at all connections but found none.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Hello,

It sounds like you have air stuck in the ABS unit. you will need a scanner that can open the valves while bleeding the system. this is a common problem. here is a guide to help you:

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

and

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

Please run down these guides and report back.