88 Toyota Pickup Brake problem

Hope someone can help me out.
I've recently replaced the Master cylinder on my truck and I can't get
the brakes to work properly. I bench bled the MC, and the entire brake
system. The brake pedal travels all the way to the floor and I have
almost zero brake pressure. I'm beginning to think I have a faulty MC
and I need to get a new one. I can't see any obvious leaks and the
reservoir stays full so I'm pretty much at wits end. Any help would be
appreciated.
Thanks

John

<faheyluv@msn.com> wrote in message
news:1145244350.254754.229620@i39g2000cwa.googlegroups.com...[color=blue]
> Hope someone can help me out.
> I've recently replaced the Master cylinder on my truck and I can't get
> the brakes to work properly. I bench bled the MC, and the entire brake
> system. The brake pedal travels all the way to the floor and I have
> almost zero brake pressure. I'm beginning to think I have a faulty MC
> and I need to get a new one. I can't see any obvious leaks and the
> reservoir stays full so I'm pretty much at wits end. Any help would be
> appreciated.
> Thanks
>
> John
>[/color]

Carefully pull back the boots on the rear wheel cylinders and make sure they
are completely dry and not leaking.

Check the pushrod adjustment. If it is OK, then the MC is probably bad.
--

Ray O
(correct punctuation to reply)

is the replacement MC new or rebuilt? if rebuilt, probably defective.
personally, I'd go with a new rather than rebuilt, since my life would be on
the line if the vehicle won't stop.

<faheyluv@msn.com> wrote in message
news:1145244350.254754.229620@i39g2000cwa.googlegroups.com...[color=blue]
> Hope someone can help me out.
> I've recently replaced the Master cylinder on my truck and I can't get
> the brakes to work properly. I bench bled the MC, and the entire brake
> system. The brake pedal travels all the way to the floor and I have
> almost zero brake pressure. I'm beginning to think I have a faulty MC
> and I need to get a new one. I can't see any obvious leaks and the
> reservoir stays full so I'm pretty much at wits end. Any help would be
> appreciated.
> Thanks
>
> John
>[/color]