here's a new one

[gsxr141]

so, my brake fluid is starting to go down a little at a time. i checked the calipers, and the master and there's no signs of leaks. the car is rust free, and all the lines look great. does anyone have any idea where it might be going?
i was thinking maybe there's a leak inside the booster, but i'm not sure.

 

[Backlash2032]

Check the pads maybe?

As pads get worn down, they will bring the fluid level down with them.

 

[planemos]

Well watch for drips. If it was leaking around the master cylinder or booster there would be a drip on the bottom more than likely. I'm kinda new with supra's but doesn't the rear e brake operate like a drum brake? If the e brake has a brake cylinder then I bet that has gone bad. Or try checking that all the bleeders are closed. Thats just my thoughts.

 

[gsxr141]

i thought it was the pads getting low, but it has happened again after only a week. also, there's no fluid under the master cylinder.

 

[planemos]

Sorry I'm an idiot. No brake cylinder for the rear e brake. It's cable operated I forgot.

 

[CajunKenny]

Inspect the bleeder valves for wetness. Inspect the brake line connections for wetness. Inspect the brake master for wetness. If all is dry, then my bet is on the booster.

 

[Poodles]

Brake master has a seal between it and the booster. If it leaks, guess where it goes...

Loosen the nuts holding the master to the booster and pull it forward and check for leaks.

 

[hvyman]

Ive figured it out.. You sir have a leak. What do i win? HEHEHE :rofl:

 

[Turbo Habanero]

Ive figured it out.. You sir have a leak. What do i win? HEHEHE :rofl:

lol.

 

[gsxr141]

gee thanks. i knew i could count on you guys.

 

[bioskyline]

check the rear seal on the master. odds are your booster is filling with fluid. if you look under the booster where the master joins, the brake fluid will disolve the paint.

 

[Poodles]

check the rear seal on the master. odds are your booster is filling with fluid. if you look under the booster where the master joins, the brake fluid will disolve the paint.

or it just starts to fill the booster, ruining it, and then the brake fluid gets sucked into the engine causing major issues...

 

[gsxr141]

there's no evidence of fluid on ON the booster, so i will pull the master off and look IN the booster.

 

[Poodles]

Like I said, there's a seal between the master and the booster. Gotta pull the master away from the booster to see if it's leaking there or not.

 

[planemos]

Holy fukin shit! Really? Cuz I had a muffler and brake shop do my brakes and the mechanic said I don't need that seal between the booster and m. cylinder.

 

[boostcraver]

Holy fukin shit! Really? Cuz I had a muffler and brake shop do my brakes and the mechanic said I don't need that seal between the booster and m. cylinder.

Toyota had a purpose for it when they put it there...

 

[legolyle]

Holy fukin shit! Really? Cuz I had a muffler and brake shop do my brakes and the mechanic said I don't need that seal between the booster and m. cylinder.

:nono:

 

[Greek]

Holy fukin shit! Really? Cuz I had a muffler and brake shop do my brakes and the mechanic said I don't need that seal between the booster and m. cylinder.

 

[planemos]

Ooops sorry for swearing. I thought I was on supraforums for a second. Sorry.

 

[gsxr141]

well, it's just as i feared. i need a new master cylinder. it showed no signs of leaking, but when i pulled it away from the booster it was wet inside. oh well. i called 5 local parts stores, and nothing. looks like i'll be ordering one.