HI, the pedal does not push back it just feels like it is going up and down by about 1 or 2 cms. When braking from 30 mph plus it is less noticeable, but feels worse when you just feather the brakes at low speed.When you say the pedal goes up and down Bob, by what amount are we talking? Is this oscillation accompanied by a reduction in braking performance? If the pedal pushes back at you, and it will be quite clear that it is, then that is indicative of problems with the booster. Otherwise warped from discs are a distinct possibility. Given it has not had much use for the past few years, it would be advisable as Gerald indicated, to change all of the fluid within the braking system, as a matter of course.
Ron.
HI, the pedal does not push back it just feels like it is going up and down by about 1 or 2 cms. When braking from 30 mph plus it is less noticeable, but feels worse when you just feather the brakes at low speed.
I will take the front wheels off first to see if there is anything obvious like rusty discs or disc run out. I will also take the advice given and change the fluid to start afresh. I do have another servo that came with the car that is supposed to have been reconditioned. Is there any checks I can do with it before I consider swapping them over?
Bob
I agree with the logic that if the handbrake produces the same symptoms it must be the discs.If you get the same vibration on the footbrake and when pulling up the handbrake then it's definitely a problem on the rear, and my guess is it's the discs. I can't think of anything on the calipers themselves that would cause it. Even if the pivot pins were seized it wouldn't give you that problem.
Easy way to prove the point is fit a set of known good used discs.
I don't have access to another used pair so it looks like new and hope that is the problem. At least I can check the calipers, hoses etc all at the same time as well as new fluid. Guess it makes sense to do it all .