I bled the entire system again yesterday and the pedal still seems soft for all new pads, rotors, calipers up front and year old hardware in back. What's my next move?
Soft pedal after two brake bleeds, what's next?
- Thread starter fishEH
- Start date
With the car off I think I do get that. What's the shop going to do?gmookher said:
No leaks in the lines.
LuisC said:
I was thinking that may be the culprit from other things I've read. Is there any way to test it?
ptschram
Well-known member
Why did you replace everything?
I've found they are either easy to bleed or horrible.
Open all the bleeders, start pouring brake fluid into the reservoir, let gravity do its job, it never takes a vacation.
I've found they are either easy to bleed or horrible.
Open all the bleeders, start pouring brake fluid into the reservoir, let gravity do its job, it never takes a vacation.
ptschram said:
When I bought the truck the rears were grinding. I just figured I'd do the calipers as well and be done with it.
Two weeks ago I was replacing the front rotors/pads and couldn't get one of the caliper's pistons to retract all the way, it was seized. I figured since I had to replace one I might as well do both.
I guess I'll try the gravity method. I need to get this figured out before I put my lift on with bigger tires and really have an issue.
Bleed it a couple more times. I had to bleed a d1 4 or 5 times last week after doing an almost identical job.
Because if it is loose the rotor wobbles, that compresses the brake piston.
Perhaps I am misunderstanding the problem but here is why I wrote what I wrote:
I recently purchased a 96 disco, the prev owner stated new pads & rotors were installed. The pedal was very soft causing me to pump it once to get a "good " pedal. I had my disco in for state inspection and they wiggled the front wheels. It had some play in it up and down, side to side. They removed the hub and the nut inside was not even finger tight. They tightened everything to spec, the wobble is gone and my brake pedal is like it should be.
Perhaps I am misunderstanding the problem but here is why I wrote what I wrote:
I recently purchased a 96 disco, the prev owner stated new pads & rotors were installed. The pedal was very soft causing me to pump it once to get a "good " pedal. I had my disco in for state inspection and they wiggled the front wheels. It had some play in it up and down, side to side. They removed the hub and the nut inside was not even finger tight. They tightened everything to spec, the wobble is gone and my brake pedal is like it should be.
Were you having a soft pedal before the brake job? If not I'd bleed it the way Paul suggested. Run an entire bottle of fluid through the system. If it's too slow grab a beer. This is the way I bleed brakes every time.
Jay5oh said:
That's interesting. I'm fairly confident everything is tight since I personally tightened them but it couldn't hurt to check again.
I'll probably hold offf on bleeding again until I put my lift on in about 2-3 weeks. I'll also be upgrading to SS lines and will have to blled the system at that point.
atriot:
Steve Rupp said:
I think I was having this issue before the brake job but I just figured it was well worn pads and rotors. So I was pretty disappointed when it was still so soft after the brake job.
I also found a post about a DII with a soft pedal and a poster mentioned that if the pedal is "sinking" it could be the M/C. I might try to pick up a used but know to be working one and dropping it in there.
If you are pretty confident on the bleed, then it is likely the MC. Are you losing fluid at all?
My brake pedal has always been soft and low, if you double pump it gets firm. I installed new re-man calipers, rotors and pads. Same. I changed the ABS modulator (used one) for reasons related to the three amigos. Same. I did a 3 liter power bleed with the hawkeye scantool after the modulator install. Same. A got a brand new master cylinder 3 days ago. I installed it 2 days ago but DII has not been running as I just finished an engine install today. I'm going to fill her up with oil, dex-cool in the morning and bleed the brakes. I hope it runs!
fishEH said:
fishEH said:
So you will go spend $$ money a new used master cylinder but you won't spend the TIME to bleed the brakes :banghead: