427Impala

In process of bleeding/flushing brakes, front flows fine using my Motive pressure device, but the rear has no flow once the bleed screws are opened. Normal? Is there a valve I need to hold down/open??


All advice appreciated.

Scott2

This does not sound good. When bleeding S197 brakes there is a sequence according to the shop manual:

1. Passenger rear
2. Driver Rear
3. Passenger front
4. Driver Front

What happens without the pressure bleeder when you open the passenger rear bleeder and press the brake pedal? Is there fluid flow?

flash_xx

There should be flow, as Scott2 said, have someone press the pedal and open the bleeder. If there's no fluid coming out take the bleeder out completely to make sure the problem isn't the bleeder screw. If there's still no fluid take it to a brake shop. Brakes are not something you want to mess with unless you know exactly what you're doing.

Simon1

Just open the screw and stomp on the pedal lol. Like the guys said, if the valve is open fluid will flow. Is the line twisted?

Derf00

How much pressure did you have on the guage for the motive pump? Typical is between 15-20psi. If the bleeder is open and there is no flow, it could be a clogged bleeder. Did you use a paper clip in the hold to see if you could get it flowing, or remove the bleeder altogether to see if it flows from the bleeder receptacle?

Also, as Scott2 pointed out, there is a correct sequence to follow for future reference.