brake problem
Turbo Mini Forums

I have a fair amount of travel in the pedal and pumping it won't bring it up, tried and tried at bleeding just in case there is a little air left but always the same. the brakes work ok, just that i'm not used to a long pedal travel myself, is there a way to adjust it?. btw, i'm running a servo, it seems to happen when i keep my foot on the brake and start the engine, i can feel the pedal drop as the servo kicks in, it stays that way until i switch off.

133.5 bhp 123 lb torque 116mph @6640rpm 9.5psi
Shakespear RWYB 14.995 91.83mph

sounds about right for a servo.

what does it feel like without the engine running?

Edited by Carl on 25th Aug, 2008.

no longer a series, but still 1.3 turbo.

pretty rock hard, wont pump up either, just drops when the engine runs, feels a little scary with that much travel.

133.5 bhp 123 lb torque 116mph @6640rpm 9.5psi
Shakespear RWYB 14.995 91.83mph

any chance of a vacuum leak to the servo then? it all sounds like its working ok but is giving abit more travel than normal??

i would say check for any vacuum leaks and make sure that the one way valve is fitted and working.

after that. when the engine is off does the pedal creep? similarly with the engine on? from the way you say it doesnt pump up i would say it probably wont.

failing all of that what have you recently changed on the set-up? if you have could you now have the wrong size rear cylinders?

Edited by Brett on 25th Aug, 2008.

Yes i moved to the darkside

Instagram @jdm_brett

On 25th Aug, 2008 Brett said:

On 25th Aug, 2008 chinlesswonder said:
pretty rock hard, wont pump up either, just drops when the engine runs, feels a little scary with that much travel.

yep thats what about right for a servo

pump up the peddle then fire her up whilst holding foot on peddle, if the peddle drops right down it does 2 things:
1.)shows the servo is working
2.)scares the crap out of you

Edited by chinlesswonder on 25th Aug, 2008.

133.5 bhp 123 lb torque 116mph @6640rpm 9.5psi
Shakespear RWYB 14.995 91.83mph

you could have just got it mate.

have a search on what ones you will need as i dont know im afraid, i just know it can cause problems. if you cant find anyhting im sure someone will be able to tell you soon enough if they see this thread.

This happened to me as well mate.

I sorted mine as follows ......

There should be a threaded rod going into the servo from the pedal box linkage. The locknut on this rod keeps everything tight on the linkage when its tight.

Yours could have slackened off during use or you might have not have set this up thereby allowing the rod to protrude too far out of the servo body.

Try slackening off the locknut and adjusting the rod anti clockwise when viewed from the front of the engine bay. This will pre position the servo diaphragm and with it, the two pistons within the master cylinder.

You need to go say three to four turns then lock the nut back up again and go for a spin.

The firm feel of the pedal should move up towards you a bit at a time.

Don't over do it though otherwise you could get binding brakes.

Richard.

Minivanless, but reluctantly happy living with the decision. There'll be another one day.
http://www.youtube.com/profile?user=minimadmotorman#p/u

I was looking at that Richard, wasn't too sure if i should tamper with it too much in case i buggered up the servo,will give it a try tomorrow and report back.

133.5 bhp 123 lb torque 116mph @6640rpm 9.5psi
Shakespear RWYB 14.995 91.83mph

sorted, thanks Richard, worked a treat.

133.5 bhp 123 lb torque 116mph @6640rpm 9.5psi
Shakespear RWYB 14.995 91.83mph

Muckin Fagic.

R.

Minivanless, but reluctantly happy living with the decision. There'll be another one day.
http://www.youtube.com/profile?user=minimadmotorman#p/u