brakes are weak. please help.

[sleepygreen]

when i press the brake and hold it the pressure dies out... i had my dad help me bleed the lines but they still do it.. i dont see any leaks wat could it be?

[vietkid_2006]

Master Cylinder is going bad.

[sleepygreen]

Master Cylinder is going bad.

is it hard to replace?

[AccordReborn]

not hard at all. its 2 bolts. I replaced mine with an oem one off of ebay for $40. look for nissin

[vietkid_2006]

is it hard to replace?

Drain DOT fluid. remove

2 bolts from the lines going to the MC

and 2 more bolts that hold it to the firewall

install, bleed. and your done. easy.

[sleepygreen]

Drain DOT fluid. remove

2 bolts from the lines going to the MC

and 2 more bolts that hold it to the firewall

install, bleed. and your done. easy.

okay thanks! could that be the only thing thoe? if it is great if its not then great also cuz then ill have a new MC. Thanks everybody.

[evil_demon_01]

okay thanks! could that be the only thing thoe? if it is great if its not then great also cuz then ill have a new MC. Thanks everybody.

If it's got rear drums it could also be the rear brake cylinders leaking.

[90cb7godd]

my car is also starting to do this from time to time... but i have a new master cylinder. sooo....??

[deevergote]

my car is also starting to do this from time to time... but i have a new master cylinder. sooo....??

re-bleed the system. You may have air in the lines. That, or your new master cylinder is defective.


OR, as evil_demon_01 said, it could be your rear drums if you have them. That's a new one to me, though... I wasn't aware that the rear drums could cause issues like that.

[mayberry]

re-bleed the system. You may have air in the lines. That, or your new master cylinder is defective.


OR, as evil_demon_01 said, it could be your rear drums if you have them. That's a new one to me, though... I wasn't aware that the rear drums could cause issues like that.

There is what's called a "wheel cylinder" inside the rear drum. It acts as a piston to push the brake shoes and and in contact with the inner part of the brake drum.

[deevergote]

I'm drum-brake retarded. I need to swap mine out for discs. My drums are shot anyway... I couldn't even bleed them. One bleeder was frozen, and nothing came out of the other one!

[batever]

I'm drum-brake retarded. I need to swap mine out for discs. My drums are shot anyway... I couldn't even bleed them. One bleeder was frozen, and nothing came out of the other one!

Using an impact wrench to free up the bleeder valves is the safest way if they are frozen. don't crank on the bleeder valve with a standard wrench if it's being resistant or you might do what I did and rip the thing in half, forcing you to install a new wheel cylinder.

If you buy a new wheel cylinder and just pull the bleeder valve from it, I'm pretty sure you can replace the one in your existing cylinder with it and save the hassle of changing out the wheel cylinder.

If you end up having to change the wheel cylinders out, then make sure to remove the rear hub assembly first. It's easy and reassembling the rear drum was like impossible without doing it-and only took 10 minutes after I finally gave in and took the hub off.

[deevergote]

I'll most likely just do a rear disc coversion. Drums look terrible anyway!

[batever]

I'll most likely just do a rear disc coversion. Drums look terrible anyway!

True enough.

[Juans90Accord]

i wanna do a disc break conversion too where could i get the stuff for it? drums look ugly! and where would the master cylinder be?