Tuesday, May 12, 2009 - 11:32 am, by: Ali Saeed(Ali)
So I've had my v8 for a couple of months now and never once have I activated the abs under braking. The brake pedal has always been pretty soft and went down to the floor when stationary and still no abs warning. I thought this was just air in the lines so Ive waited till putting on tt brakes to flush and bleed. Did that yesterday only to find exactly the same problem. Pedel still goes down all the way easily and no abs warning. Lots of air came out of the lines when I bled them. Also I noticed that air was escaping the master cylinder when I poured in more fluid. WTF is wrong with my system!
Peter Nitschke Junk Filterer South Australia UZZ30 UZZ31
Tuesday, May 12, 2009 - 04:52 pm, by: Ali Saeed(Ali)
i dont think i wouldve got air into the abs, as i made sure there was a lot of fluid in the master cylinder, they mightve done that last time it got bled. ill bleed it again on the weekend and see how it goes.
Tuesday, May 12, 2009 - 06:35 pm, by: Matt Newman(Soarersrock)
just wondering if you bled the brakes with the car running as when i changed my brakes to 4 pots i bled them first without it running and then again while running and i got heaps of air out of the system then
Tuesday, May 12, 2009 - 09:16 pm, by: Nathan Smith(Zanjara)
If the brake pedal goes right to the floor pretty much i would be looking at your master cylinder. Go to a brakes place like ABS and tell them what is going on. They should be able to help you out.
Friday, May 15, 2009 - 07:18 pm, by: Nathan Smith(Zanjara)
I am pretty sure that is your problem. Have you checked the level of your brake fluid? I know if it is low it comes up on the dash but its better to be safe then sorry.
If the master cylinder has failed you can either get it re sleeved, get a new one or you can get a new kit for them. Prices i have no idea for the soarer on either.
Wednesday, May 27, 2009 - 06:11 pm, by: Ali Saeed(Ali)
well had a look around the car, talked to a couple of mechanics. apparently there is NO leak.
No fluid under or on the sides reservoir No fluid under the car. No fluid near the master cylinder assembly No fluid near the calipers No fluid anywhere near the break lines
there doesnt seem to be a loss of fluid anymore but the damned pedal still goes to the floor, but its a bit harder to do it now. any more suggestions other than a shot master cylinder?
Wednesday, May 27, 2009 - 08:58 pm, by: Scott Wilkes(Scottywilkes)
If you have made certain you have bled the brakes completely then its definately something up the line, it will be either the master cylinder or the ABS system if your car has it.
id say your primary or secondary piston seal within the master has got a tear in it.
This will cause the high pressure section of the master to leak back into the return port, so you will loose pedal feel and brake pressure.
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