Post by
darkNimbus »
https://forums.nicoclub.com/darknimbus-u237393.html
Tue Jun 18, 2019 10:22 am
Just like the title reads my Infiniti M37x had soft pedal and brought it to the Infiniti dealership to diagnose and they originally said the brakes need to be bled. I authorized but the problem persists. They recommend master cylinder to be changed, I authorized and now it’s still spongy!! So at this point I give up on them and decide to take matters into my own hands and am trying to figure this out myself. I am somewhat mechanically inclined but no expert, I can’t change my own brakes, tires, filter, etc. basic stuff.. I’m here to ask for more advice from on what I should diagnose next on my car or if anyone know what it could be. Any help is appreciated! I’m pulling my hair out researching..
Symptoms: pressing on pedal while engine is running feels spongy. Pressing on the brakes while car is off, multiple pumps will harden the pedal.
Tested: I have tested the brake booster. With engine off I was able to pump and pedal is hard. Holding on the brake pedal and turning car on the pedal drops about 50% and holds.