Brake knock help

Need technical Q/A then you're in the right place

Moderator: martauto

rotta
E30 Zone Newbie
E30 Zone Newbie
Posts: 174
Joined: Tue Jun 13, 2006 11:00 pm

Post Tue May 29, 2012 12:47 pm

Knocking from under the car everytime i apply the brake... Any ideas??

Many thanks

Rotta :(
Rtaylor2208
E30 Zone Addict
E30 Zone Addict
Posts: 3004
Joined: Mon Oct 11, 2010 11:00 pm
Location: Ayr, Ayrshire, Scotland

Post Tue May 29, 2012 12:50 pm

Realistically it could be anything, have you had the wheels off to check the discs, pads, balljoints, bushes etc etc
rotta
E30 Zone Newbie
E30 Zone Newbie
Posts: 174
Joined: Tue Jun 13, 2006 11:00 pm

Post Tue May 29, 2012 12:58 pm

started this morning on way to work can only notice it wen braking at slow speeds
User avatar
aimlessrock
E30 Zone Squatter
E30 Zone Squatter
Posts: 1821
Joined: Sun Dec 06, 2009 11:00 pm
Location: Manchester

Post Tue May 29, 2012 1:15 pm

need more details mate, but as advsied have the wheels off and get the pry bar out to everything a good check.
E30 320i Convertible (1989)
190 Mercedes (1988)

"there is nothing more expensive than a cheap E30"
rotta
E30 Zone Newbie
E30 Zone Newbie
Posts: 174
Joined: Tue Jun 13, 2006 11:00 pm

Post Tue May 29, 2012 1:54 pm

Took it for a brief spin at lunch knock definately feels like its from under the pedal box or off side suspension somewhere must be a dead bush/joint id guess? also did notice that all the pumping of the brake pedal to have a good listen seemed to make the brake cylinder under the glovebox seem noisier than usual but i might be imagining that becuase i was listening harder??
rotta
E30 Zone Newbie
E30 Zone Newbie
Posts: 174
Joined: Tue Jun 13, 2006 11:00 pm

Post Thu May 31, 2012 4:12 pm

Bottom ball joint is hangin out.
Rtaylor2208
E30 Zone Addict
E30 Zone Addict
Posts: 3004
Joined: Mon Oct 11, 2010 11:00 pm
Location: Ayr, Ayrshire, Scotland

Post Thu May 31, 2012 4:16 pm

Was the bolt holding it on missing altogether?
rotta
E30 Zone Newbie
E30 Zone Newbie
Posts: 174
Joined: Tue Jun 13, 2006 11:00 pm

Post Fri Jun 01, 2012 10:53 am

no it was there just so much play in it :s