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Abs bleeding procedure
- Thread starter SEATCOOBER
- Start date
ive heard you have to have all four off the ground, but does the ibiza have abs on rear, when you do the proceedure does it pump all the air down the lines so you have to bleed them again, as my resevoir went dry when i refirbed the rear calipers and the pedal is spongey only when driving think it has air in system some where !!!
yes with ignition off the brake servo acts as normal pump the brakes it goes hard then does not sink until you switch on ignition that works fine it just seems to be when im moving i get spongey brakes on the first application, ive bled the brakes three times now but the system did go dry, i hate taking my car to the garage because people dont look after it like i do, can i getthe air out of my master cylinder myself if this is the problem???how much for a pressure bleed???
Im going to look to do this soon, but as mentionned in the thread the Ross-tech guide is pretty vague. Found this thread on a VW forum that is a bit more descriptive if anyones interested.......
http://uk-mkivs.net/forums/t/259666.aspx
http://uk-mkivs.net/forums/t/259666.aspx
ok, only thing I don't understand is if you open the bleed nipples on the callipers and have to press the brake won't fluid go all over the place? Or you collect it and keep the reservoir topped up?
Pop clear tubes over the nipples & collect in a jar or somthing.
Id top up the reservoir topped up with fresh stuff.
Will these cars use DOT 5.1 happily? I used it in my zetec s and it played havoc with the servo.
when doing this proceedure do you have to have one way valves over both the front bleed nipples?
Is there any benefit from using vag-com instead of a pressure system, bleeding the whole system.
Prebs
Prebs
vag com bleeds the abs system which needs to be done if the system goes dry, do you just use clear pipes from the bleed nipples to the bottles or do they have to have non return valves on them to stop air getting back in the system?
I use a spesial made hose with a cap that goes on to the brakefluid reservoar. I then connect the hose to my spare tyre to get pressure and then I start to open up on the calipers to drain, I first start with the rear calipers and then move forwards. When system is completely dry I fill up with new brakefluid again, attach the hose to get pressure and start to open up again until i have new fluid pouring out. I use clear pipes to a bottle thats half full with old fluid. Done this a couple of times on trackdays as I always get stopped before entring the track cos there´s to much water in the fluid and they wont allow me out on track before it´s changed.
Prebs
your talking about a full pressure bleed im talking about bleeding the abs pump which uses vag com
Oh sorry, my mistake. Have never had an issue with air in the abs pump before. Did you get air in the pump by changing fluid?
Prebs
i just read this thread and i still have same problem as you seatcoober i have changed these items now slide pins, front hoses, pads and disc front and rear, bleed the system loads of times, and also fitted a master cylinder, and a abs pump, only thing i havent done is bleed the abs pump or presure bleed it since fitting the pump and master cylinder..
also i seen a presure bleeder for about 40 quid from a motor factors..
also i seen a presure bleeder for about 40 quid from a motor factors..
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