I just changed all four of my pads. For those of you who have done this before, when you take the old pad out and put the new pad in, you have to compress the piston inside to make enough room for the new pad. Well, I did that for the fronts first and it was no biggie. For the rear though, when compressing the piston, I could hear fluid squirting out of the brake fluid reservoir. When I went to look at it, the fluid was overflowing everytime I compress the piston. I just put a towel over the reservoir and finished the rest of the pads.

Now, I start my car and pump the brakes a couple times to get the fluid flowing, but the pedal isn't as stiff as it should be. I can press it down to the floor with little resistance. The fluid in the reservoir did not go back down either after pumping the brakes many times. I then pumped a little of the brake fluid out, so the level would go back to the max fill line. Still, the pedal felt way too weak. So, what do I do to make the pedal travel the way it used to be? Did I do something wrong?

Btw, I have oem Brembo's. And I did not change or touch the brake lines.

 

Probably got air in the line. I have done this crap several times, that is why I go to a shop now for $65. If you can drive the car it will save you a chunk of time.

 

Well, if it started to overflow, it's definatly overfull now. Deal with THAT problem first. It obviously shouldn't be filled to the top of the resivour.

Now to the cause of your problem: Your resivour, if properly full when installing new pads, has enough fluid to accomidate with wearing pads. Because pads will wear and the pistons will stay extended, the level of the fluid will go down. If you fill it up on worn pads, it will be overfull when you push the piston back in. No need for that.

I dont know how you would have possibly gotten air in the lines doing what you said you did. Maybe one of the pads isnt sitting properly?

 

Possibly, I will see if the pedal feel improves after the bed in procedure. I pumped out the excess fluid, so now it sits at the max line. You are correct though, I did fill the brake fluid up when I had low pads.

Edit - Found a good DIY on stoptech's website for bleeding (not a full flush), so I am going to try that and see if it helps.

 

i think we do
Right Rear
Left Rear
Right Front
Left Front

in that order if you're bleeding.. make sure to watch the resivour tank as you bleed.. also good idea to get a friend to help too

 

did this problem ever get solved? i have the exact same problem, tho my car the pedal started dropping to the floor, so i replaced pads and rotors and its still doing it!!

 

If it's still doing it after flushing the fluid, then it could be your master cylinder... I had that happen on a different (but much older) car... The seals in the master cylinder went out, so that the pedal would just go to the floor.

Hopefully you just have air in the lines, as that's a simple fix.

 

ok so to my solution...

i started bleeding them and my 2 of my bleeders broke off inside the calipers, 3 others stripped out on the way out.
so i am currently pulling all 4 calipers off and taking them to my friends shop.

yay...


who has brembo envy now?

 

Whenever you push the piston in the caliper in you are supposed to open the bleed valve and let the pressure get relieved there. You can damage the whole ABS system if you dont do this. I've seen it a lot were it damages the ABS modlule and can damage the Brake booster.

 

It will not damage the system by not opening the bleed valve. The Infiniti Service Manuals does not say to open the bleed valves when doing this, and even says the fluid will return to the master cylinder when compressing the pistons. If the ABS modules or the booster breaks when doing this, then you can take it to Infiniti and have it replaced under warranty, because following the Service Manual's direction is the correct procedure as far as Infiniti is concerned.



I went through the same thing with Acura when they tried to deny a warranty repair on my transmission, over flushing procedures. I asked the service manager to show me in the Acura Service Manuals, where the flushing procedures differed from the way I performed it. They re-instated my warranty.