well today i did this:
put on my daytona rear discs, anywho after bleeding and bleeding the pedal goes all the way to the floor still there can't be any air becuase a constant stream comes out the master did not go dry as there was still fluid in the resovoir, i bled the abs master as well and it still went ot the floor, if you pump the pedal it builds pressure but if you hold the pedal falls to the floor, i think the master may be gone but before i go thru all the work of changing it i want more oppinions, POST EM UP lol i want this to work asap
I believe it may be the master cylinder. Thats the way my brakes behaved when my master cylinder went out. Luckily it was still under warranty so I didn't have to pay a dime to get it replaced.
They Call Me...Baby Gorilla wrote:I believe it may be the master cylinder. Thats the way my brakes behaved when my master cylinder went out. Luckily it was still under warranty so I didn't have to pay a dime to get it replaced.
changed it out today with a known good one, pedal is still spongy like it has lots of air in there, im gonna try pressure bleeding it tomorrow, if that doesnt work i don't know waht im gonna do residual pressure valves won't help i don't think so i'll have to figure somethign out
Was it working ok before you swapped?
Try this if you dare:
Get the car going to around 20mph. Slam on the brakes as hard as you can and see if it pulls to one side other the other. If you have air in one of the lines that line will not grab as hard. The MC has two chambers one goes the to FL and BR, the other goes to FR and BL. The fronts grab harder than the rear, so if the car pulls to the left check the rear left line. If the car pulls to the right check the rear right line. I had the same sort of problem on my Bonne a while back and finally figured out which line was causing problems this way. Double check that your e-brake works before doing this of course.
Course if it's both lines that have air then it wont pull.
James Cahill wrote:Was it working ok before you swapped?
yea it was working just fine before i swapped thats why i think its just a lot of air in the lines since the fluid goes down when you pump the pedal and comes back up slowly after you let off like your compressing air and cramming more fluid in there
That's definately a sign if you have quite a bit of fluid displaced from pumping the pedal, and it takes a minute for it to all come back. Definately sounds like air in a line.
i had the exact same problem, fixed it today..
i got a new master cylinder, bled the master cylinder ( there are two 8 mm bleeder screws) then bled all 4 wheels, they work amazing now.. hope this helps
