IVE GOT A NISSAN SAFARI 1990 THAT HAS A FADING ...

1990 Nissan Patrol/Safari

Tiny

sonicone

April, 1, 2011 AT 6:10 AM

Hi, i've got a nissan safari 1990 that has a fading brake pedal when engine is running, so far the master cylinder has been replaced, new rotors all round, new pads, rekitted callipers and new pistons fitted, but still have a fading pedal, the callipers are all sliding freely, theres no leaks, and if I clamp all the brake lines at four corners it's fine, could the propotioning valve at the rear be causing this problem?As it's the only part thats not new, the indicator(!)Light flashes breifly as the pedal is initially depressed, any help greatly appreciated.

FOUND 11 RELATED QUESTIONS

3 Answers

Tiny

KHLow2008

April, 1, 2011 AT 9:58 PM

Can you explain your meaning of fading in more details? I need to verify that I understand the situation correctly.

Tiny

sonicone

April, 2, 2011 AT 12:52 PM

Hiya, when holding pressure on the pedal while engine is running the pedal slowly drops to the floor, within about 10 seconds. Thank you for your reply.

Tiny

KHLow2008

April, 2, 2011 AT 4:56 PM

That is an indication of pressure leakage and it is due to either leaking or a bad master cylinder.

Check for leaks and if none found, check the master cylinder. The seals are leaking internally.

Please login or register to post a reply.

Brake Pad/Rotor Replacement - Front
Brake Pad/Rotor Replacement Chevrolet
Brake Pads and Rotor Replacement - Front
Brake Pad/Rotor Replacement Honda Element
Brake Pad/Rotor Replacement Ford Escape
Brake Pad/Rotor Replacement Mercedes ML