Brakes acting wierd(searched) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

PomiDori · 09-18-2010, 08:57 PM

Setup
ABS deleted
300zx master cylinder new
300zx front and rear calipers bleeders on top of the calipers
ebc yellow pads
Blackworks(Exactly the same as Ksport)Ebrake
auto brake booster

When the car is not running pedal and Ebrake is stiff,once u start driving and push the brake pedal it goes all the way to the floor and no stopping power,but if u pump brake pedal twice it works perfect.Ebrake is stiff, but nolocking

The way I bleed the system is pump brake pedal 2-3time till stiff open the bleeder push the pedal down then Ebrake,closed the bleeder.There was no bubles.
Help!

s13silvia123 · 09-18-2010, 09:02 PM

get yourself one of these much much more easier to bleed. did you you bleed the rear calipers first then move to the fronts

PomiDori · 09-18-2010, 09:07 PM

Quote:

Originally Posted by s13silvia123

get yourself one of these much much more easier to bleed. did you you bleed the rear calipers first then move to the fronts

where I can buy this kit?
yes,rear pass>rear driver>front pass>front driver side.

PomiDori · 09-19-2010, 10:31 PM

Bought vacuum kit like that and bench bleed kit,bleed it no air in master and no air in calipers and still no change.
I will try to adjust the stud on the brake booster.

Vicious Beaner! · 09-19-2010, 10:39 PM

yeah same problem here . i used 1 of those bleeder pumps and no air in the system and still no change?? same problem like this guy. you think it can be the master cylinder????

PomiDori · 09-22-2010, 06:41 PM

Update figured that bleeders in the rear was wrong size(some standart size),but they never leak.
bought some 10m1.0 bleeders gonna try tomorrow.

SHIFTrl240 · 09-22-2010, 08:59 PM

So you are saying if you have the car off and pump the brakes its hard? Then, if you hold the brakes down while turning the car on it falls to the floor?

PomiDori · 09-24-2010, 06:31 PM

Quote:

Originally Posted by SHIFTrl240

So you are saying if you have the car off and pump the brakes its hard? Then, if you hold the brakes down while turning the car on it falls to the floor?

no stays hard.

SHIFTrl240 · 09-24-2010, 06:33 PM

When does it fall to the floor?

PomiDori · 09-24-2010, 10:31 PM

Once u drive the car it goes to the floor.I know it sound like bad brake booster,but
I checked master cylinder and brake booster according to FSM.

PomiDori · 10-17-2010, 05:54 PM

update

there is a rod with nut under the dash by the brake pedal,so the nut was loose and the rod it was spinning freely. rod adjusted,nut tight-problem fixed!

09-18-2010, 08:57 PM	#1
PomiDori Zilvia Member Join Date: May 2009 Location: st.louis Age: 31 Posts: 204 Trader Rating: (4) Feedback Score: 4 reviews	Brakes acting wierd(searched) Setup ABS deleted 300zx master cylinder new 300zx front and rear calipers bleeders on top of the calipers ebc yellow pads Blackworks(Exactly the same as Ksport)Ebrake auto brake booster When the car is not running pedal and Ebrake is stiff,once u start driving and push the brake pedal it goes all the way to the floor and no stopping power,but if u pump brake pedal twice it works perfect.Ebrake is stiff, but nolocking The way I bleed the system is pump brake pedal 2-3time till stiff open the bleeder push the pedal down then Ebrake,closed the bleeder.There was no bubles. Help! Last edited by PomiDori; 09-19-2010 at 03:36 PM..

09-18-2010, 09:02 PM	#2
s13silvia123 Post Whore! Join Date: May 2006 Location: where waldo is Age: 39 Posts: 3,256 Trader Rating: (16) Feedback Score: 16 reviews	get yourself one of these much much more easier to bleed. did you you bleed the rear calipers first then move to the fronts __________________ 18g and 20g turbo users click on me http://zilvia.net/f/tech-talk/261219-18g-20g-turbo-users.html

09-24-2010, 06:33 PM	#9
SHIFTrl240 Leaky Injector Join Date: Dec 2003 Location: Cincinnati Age: 35 Posts: 138 Trader Rating: (1) Feedback Score: 1 reviews	When does it fall to the floor? __________________

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09-19-2010, 10:31 PM	#4
PomiDori Zilvia Member Join Date: May 2009 Location: st.louis Age: 31 Posts: 204 Trader Rating: (4) Feedback Score: 4 reviews	Bought vacuum kit like that and bench bleed kit,bleed it no air in master and no air in calipers and still no change. I will try to adjust the stud on the brake booster.

09-19-2010, 10:39 PM	#5
Vicious Beaner! Zilvia FREAK! Join Date: Oct 2009 Location: Moreno valley/ Riverside Ca Posts: 1,498 Trader Rating: (38) Feedback Score: 38 reviews	yeah same problem here . i used 1 of those bleeder pumps and no air in the system and still no change?? same problem like this guy. you think it can be the master cylinder????

09-22-2010, 06:41 PM	#6
PomiDori Zilvia Member Join Date: May 2009 Location: st.louis Age: 31 Posts: 204 Trader Rating: (4) Feedback Score: 4 reviews	Update figured that bleeders in the rear was wrong size(some standart size),but they never leak. bought some 10m1.0 bleeders gonna try tomorrow.

09-22-2010, 08:59 PM	#7
SHIFTrl240 Leaky Injector Join Date: Dec 2003 Location: Cincinnati Age: 35 Posts: 138 Trader Rating: (1) Feedback Score: 1 reviews	So you are saying if you have the car off and pump the brakes its hard? Then, if you hold the brakes down while turning the car on it falls to the floor?

09-24-2010, 10:31 PM	#10
PomiDori Zilvia Member Join Date: May 2009 Location: st.louis Age: 31 Posts: 204 Trader Rating: (4) Feedback Score: 4 reviews	Once u drive the car it goes to the floor.I know it sound like bad brake booster,but I checked master cylinder and brake booster according to FSM.

10-17-2010, 05:54 PM	#11
PomiDori Zilvia Member Join Date: May 2009 Location: st.louis Age: 31 Posts: 204 Trader Rating: (4) Feedback Score: 4 reviews	update there is a rod with nut under the dash by the brake pedal,so the nut was loose and the rod it was spinning freely. rod adjusted,nut tight-problem fixed!