70 challenger brake pedal fade manual brakes

[19challenger70]

70 challenger brake pedal fade manual brakes
Brakes pedal fades I do not see any fluid leaks what could be the problem?

[67vertman]

Does it fade after you used them for awhile?  Or, does the peddle feel spongy? 

[MEK-Dangerfield]

I have a 70 with manual brakes. The first thought is air in the lines. Are these new brakes? Have you tried bleeding the brake lines?

[19challenger70]

The pedal is hard then fades as im on the brakes , Like sitting at a light if i let off the pedal seems to come back then fades again.These are not new brake, problem started first time out for the spring. I do not see any fluid at any wheel or at the junction box on the axle.

[Moparal]

Bad master cylinder. It is leaking through and by passing

[67vertman]

 

If the peddle goes soft while your stoped, then it is probably the master cylinder.

[heminut]

I agree with Alan, fluid is seeping past the seals in the master cylinder when pressure is applied.

[19challenger70]

Thanks I talked to a few people and they agree.
Anybody know off a good place to get one?

[Moparal]

O'Riely's, cae quest, advanced, auto zone, napa, your favorite store. Bargain shop, or rebuild yours