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Model specific boards => Golf mk2 => Topic started by: andy mk2GTI on 10 November 2008, 17:14

Title: rear brake problem
Post by: andy mk2GTI on 10 November 2008, 17:14

my 1988 8v GTI is having serious rear brake problems! it has discs and i cant get it up to power for MOT. thought caliper pistons ad seized so tried new ones (calipers) still same, bled system twice still same, changed master cylinder still no joy!!! any suggestions?

Title: Re: rear brake problem
Post by: Nate187 on 10 November 2008, 17:31

Ive spent today taking the old corroded brake pipes and leaking brake reg valve off the car. Maybe you have a similar problem?

Title: Re: rear brake problem
Post by: andy mk2GTI on 10 November 2008, 17:39

yeh pipe to brake calliper was weeping so changed that! had it on mates ramps and brake lines looked in order!

Title: Re: rear brake problem
Post by: oakgreengolf on 10 November 2008, 18:27

up to power??  Does the handbrake work ok. Is it lowered?

Title: Re: rear brake problem
Post by: andy mk2GTI on 10 November 2008, 18:42

yeh its lowerd and no hand brake is just as bad as foot.

Title: Re: rear brake problem
Post by: andy mk2GTI on 10 November 2008, 18:46

power as in on rollers its not getting over like 10 on the guage.

Title: Re: rear brake problem
Post by: oakgreengolf on 10 November 2008, 18:54

have changed the rear brake bias valve for a new one? old one could be knackered. When bleeding this needs to be clamped. Also have you blead the brakes in the correct order

Title: Re: rear brake problem
Post by: andy mk2GTI on 10 November 2008, 18:59

my friend did the bleading so that is a very gud question! he is a mechanic so im guessing he did! im going to have see him tomorrow! so you think bias valve is next thing 2check? it would make sense as front brakes are spot on!!!

Title: Re: rear brake problem
Post by: Steve_B on 10 November 2008, 19:04

Had the same problem myself which turned out to be the arm on the bias valve had siezed. Deffo check that next.

Title: Re: rear brake problem
Post by: oakgreengolf on 10 November 2008, 19:07

german sweedish car parts do them for around £35-£40 I think. Sounds like this is your problem

Title: Re: rear brake problem
Post by: Nate187 on 10 November 2008, 19:09

They're close to £50 from gsf

Title: Re: rear brake problem
Post by: andy mk2GTI on 10 November 2008, 19:09

brilliant thanks for all your help! we have been doing our heads in! will let you know if it worked tomorrow!