Help with bleeding new brake setup!
Posted
#1346180
(In Topic #164785)
Old Timer
My car is a 1990 gti.
In the near future I plan on putting a 1.8t agu engine in it, hence why I've upgraded my brakes.
i have changed the servo and master cylinder to a mk2 16v setup as the guide on here. The rear brakes are also mk2 16v solid discs. The front brakes are Vauxhall 256mm discs and larger calipers.
I also replaced all the pipe work and hoses so the system was dry. I began bleeding them and after the 6th attempt I was baffled as I get clean fluid from the bleed nipples with no bubbles but the pedal refuses to firm up.
I have been using eezibleed and also tried it manually with the help of a friend. Checked for leaks not a drop.
am I being incredibly stupid by missing something?
Posted
Old Timer
I have also clamped off all the flexi hoses and I get a solid pedal.
So must be air trapped somewhere.
I have bought a sealey pressure bleeder so see what happens.
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cheers
Simon
83 Candy White Campaign http://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-mk1-golfs_2%2Fmk1-golf-restoration_2 89 Caddy pick up http://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-other-cars-and_2%2Fcaddy-barn-find Mk1 Scirocco project completed
Posted
Old Timer
I've tried the pressure bleeder I have bought but still the same, I must have put 5 litres of brake fluid through by now still no air coming out.
Checked the system for leaks over and over. Master cylinder must be fine if I get a good pedal with hoses clamped off.
Only thing I can think of now is take all the callipers off and wind them back, clear the system and try again. Any suggestions before I do?
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Settled In
only then did the pedal come right for me
Posted
Settled In
down, but if you are getting fluid at the caliper you've probably done this.
83 Candy White Campaign http://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-mk1-golfs_2%2Fmk1-golf-restoration_2 89 Caddy pick up http://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-other-cars-and_2%2Fcaddy-barn-find Mk1 Scirocco project completed
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Posted
Old Timer
I pushed brake the calipers emptied the system and tried again, pedal is a little better but still too much travel before I get the brakes.
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Old Timer
Posted
Old Timer
I clamped off the hoses individually to see if I got a good pedal. The osr was clamped and pedal came up. It was because there was trapped air in the caliper. I had to take it off wind the piston back again. Put something inbetween the pads the same width as the disc. Hold it up so the bleed nipple is facing upwards. Get a friend to pump the pedal a few times them hold it down to get enough pressure to get the air out of it. Was quite tricky so I thought I might have 2 left hand calipers as one seems to have the bleed nipple in the wrong place. I really don't know why but the caliper was a refurbished item. Or it's off another model or the bleed hole has been retapped.
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MOTY 2013
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