Cyber240 said:I have a 1990 coupe, but when I hit the brakes the pedal travels to the floor, if I pump it a few times I get some brake. It has not lost any fluid so I`m thinking the booster, any other ideas
se_nismo said:i just recently had this same problem, have you done any work to it recently?
my suggestion is fully inspect the calipers and brake lines for any leaks(thats where my problem was) if everything looks fine then take off your master cylinder and bench bleed the master cylinder place it back on the booster with the master cylinder lines plugged (do not hook up your brake lines yet) then pump the brake pedal a few times and see if it firms up if it does then your master cylinder is good but if its still mushy then you found your problem.
this doesnt sound like your brake booster because i believe if a brake booster goes out the brake pedal gets really hard and feels like pressing on a wall.
***Very important to bleed out your brake lines very good***[/QUOTE
Thanks for the reply, I have not done any work to the brakes lately.When I got the car a month ago I checked out the brakes and all appeared fine, Would I not be losing fluid if the line had a hole? the master cylinder is still at the same level as when I topped it up a couple of weeks ago.I know it does mot make much sense.Thanx again
Bskater00 said:i had the same problem. it turned out to be my calipers were seized up and i needed new brake pads and rotors. so that could possibly be causing it
definatly sounds like your master cylinder has an internal leak (meaning the seals inside it are bad and the fluid just leaks back into the resivoir and not out of the system) if your gonna replace it yourself make sure you bench bleed it before you install it on the car or it will take FOREVER to get all the air out of the brake system good luck !!!Cyber240 said:Hey everyone thanks for the responses and answers, but the brake problem is weird. I let the car sit for a week then I went back to it and the brakes were actually pretty good after I pumped them a couple of times, but they still feel weak, NO FLUID was lost and any point of this problem and I checked the lines for breaks or crimps all look ok. Since there is no leaks and all the calipers seem to be fine along with the brake pads, i`m guessing the master cylinder what does anyone think?