Low pressure in brake pedal
03-21-2011, 12:35 PM
#1
Low pressure in brake pedal
So I push the brake pedal down and at around 50% I start to feel the brakes kick in. Last weekend I bleed the brakes and topped off the brake fluid reservoir. But it only improved very slightly. I figured there was some air in the line since the fluid was a littke bit below the max limit. My question is do I need to remove all of the old fluid from the lines and reservoir and what is the best way to go about it.
03-21-2011, 12:39 PM
#2
First, my suggestion would be to rebleed the lines, and of course, get all of the old fluid out. You only need 2 bottles of fluid to do this. I think that would fix your issue.
Although you can do this yourself, it is much easier to properly bleed your brakes if you have someone else there to help you do it. If you don't want to do it yourself, go to an indy shop and pay for it.
Although you can do this yourself, it is much easier to properly bleed your brakes if you have someone else there to help you do it. If you don't want to do it yourself, go to an indy shop and pay for it.
03-21-2011, 05:21 PM
#4
the overexplainer
just a heads up, it's pretty much impossible to get all of the old fluid out with just 2 bottles. I went from a disgusting black to a shade of amber. Used both bottles, have a bit left in the 2nd for emergencies and is in my trunk. didnt feel comfortable bleeding it with barely any fluid left in the bottle.
You'll get a good amount of new fluid in mixed with some of the old, but it's a lot better than just running dirty old fluid. Good luck.
You'll get a good amount of new fluid in mixed with some of the old, but it's a lot better than just running dirty old fluid. Good luck.
03-29-2011, 04:55 PM
#5
So i bought the 1qt of brake fluid from acura and went about bleeding the brakes. Just so I have this right this is what I did, take off the front drivers' side wheel then open the nipple have someone in the car push down on the pedal then close nipple and repeat. I did this to the front drivers side, front pass side, rear drivers side, then rear pass side in that order.
The pedal feel has not changed much, the color of the fluid in the reservoir went from black to light clear gray.
what am I doing wrong?
The pedal feel has not changed much, the color of the fluid in the reservoir went from black to light clear gray.
what am I doing wrong?
03-29-2011, 11:25 PM
#6
Race Director
So i bought the 1qt of brake fluid from acura and went about bleeding the brakes. Just so I have this right this is what I did, take off the front drivers' side wheel then open the nipple have someone in the car push down on the pedal then close nipple and repeat. I did this to the front drivers side, front pass side, rear drivers side, then rear pass side in that order.
The pedal feel has not changed much, the color of the fluid in the reservoir went from black to light clear gray.
what am I doing wrong?
The pedal feel has not changed much, the color of the fluid in the reservoir went from black to light clear gray.
what am I doing wrong?
https://acurazine.com/forums/3g-tl-2004-2008-93/brake-fluid-change-696162/
Last edited by nfnsquared; 03-29-2011 at 11:27 PM.
03-30-2011, 04:48 AM
#7
So i bought the 1qt of brake fluid from acura and went about bleeding the brakes. Just so I have this right this is what I did, take off the front drivers' side wheel then open the nipple have someone in the car push down on the pedal then close nipple and repeat. I did this to the front drivers side, front pass side, rear drivers side, then rear pass side in that order.
The pedal feel has not changed much, the color of the fluid in the reservoir went from black to light clear gray.
what am I doing wrong?
The pedal feel has not changed much, the color of the fluid in the reservoir went from black to light clear gray.
what am I doing wrong?
What kind of brake fluid are you using?
Trending Topics
04-04-2011, 01:01 PM
#11
get this checked... i had this problem a few yrs ago where the VSA was faulty and pumping air into the brake lines... it was covered under warranty... Blakura even crashed his car because of this problem when his brakes suddenly locked up mid turn...
09-08-2014, 07:29 AM
#13
First, my suggestion would be to rebleed the lines, and of course, get all of the old fluid out. You only need 2 bottles of fluid to do this. I think that would fix your issue.
Although you can do this yourself, it is much easier to properly bleed your brakes if you have someone else there to help you do it. If you don't want to do it yourself, go to an indy shop and pay for it.
Although you can do this yourself, it is much easier to properly bleed your brakes if you have someone else there to help you do it. If you don't want to do it yourself, go to an indy shop and pay for it.
you can buy a plastic weed killer sprayer and a generic brake reservoir cap and make your own pressurized bleeder.
1. drill hole in side of container near the bottom
2. thread in a brass hose fitting
3. do the same to the cap for the brake fluid drill a hole and add a brass hose fitting
4. run hose from sprayer to cap
then you can add brake fluid to that screw the cap onto the fluid reservoir and pump it up go around to each caliper and open the bleeder until fresh fluid comes out.
09-08-2014, 01:40 PM
#14
Chapter Leader (Southern Region)
04-09-2019, 10:30 AM
#16
Advanced
04-09-2019, 11:03 AM
#17
Senior Moderator
04-18-2019, 03:36 PM
#19
Advanced
04-18-2019, 03:41 PM
#20
Senior Moderator
Well don't just start throwing parts at it.. DId you replace brakes recently? Check all the lines and make sure the bleeder valves are closed and there's no break anywhere.
04-18-2019, 03:44 PM
#21
Chapter Leader (Southern Region)
Looks like it's time to make sure the insurance policy is up to date
04-18-2019, 03:49 PM
#22
Advanced
Modulator was the last resort. Brakes were replaced recently along with the master cylinder. No leaks
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