Annoying clonk

Aerodynamica · Post by **Aerodynamica** » Tue Feb 24, 2009 6:47 pm

Both Cyril the BX and Aphrodite the CX have a similar annoying clonk from around the RH front axle upon taking up drive (mostly with a bit of right hand down such as pulling away right from a driveway) it will do it once and not again for ages but almost always does it after heavier braking.

I have checked the lower ball joint, the brake caliper, pads, anti rattle spring, lower wishbone bush - not a race of wear in any of them. There was a small split on the rubber of the track rod end of that side but no sign of wear in the actual joint.

What could it be? duff CV joint - it's totally silent otherwise.

Kitch · Post by **Kitch** » Tue Feb 24, 2009 6:59 pm

Check the lower engine mount and the bolt under the O/S/F mount, which is hidden in the OSF arch behind the little oval rubber grommet.

Aerodynamica · Post by **Aerodynamica** » Wed Feb 25, 2009 12:03 am

OK will do! thanks very much

Debelix · Post by **Debelix** » Thu Feb 26, 2009 1:51 pm

Erm... I've got the exact same annoying clonk from the RH front area and don't have even the slightest clue what could be the reason for it

So please if you find out what causes the damn sound, would you be "as kind as you are beautiful" (as and old BG phrase says) and write the answer to this riddle?

Jaba · Post by **Jaba** » Thu Feb 26, 2009 5:57 pm

A few other points to check - The lower balljoint can be slightly loose in the hub i.e they can unscrew themselves if not fully tightened and staked.

The front subframe mountings, particularly the rear bolts in the floor.

Front strut top mounting, is it tight and sound and is the 35mm nut tight.

Aerodynamica · Post by **Aerodynamica** » Sat Feb 28, 2009 5:10 pm

Thanks for the advice. Right so far I only checked the strut mountings and the rearmost sub frame mountings and found the sub frame nut to be less than tight. I tried to nip it up but it will not tighten so I'm guessing there is a hex of sorts under the carpet to lock first - does the carpet all have to come up?

Way2go · Post by **Way2go** » Sat Feb 28, 2009 6:55 pm

Aerodynamica wrote:sub frame nut to be less than tight. I tried to nip it up but it will not tighten so I'm guessing there is a hex of sorts under the carpet to lock first - does the carpet all have to come up?

For a BX hatch it is necessary to remove the carpet and peel back the tape over access holes in the boot floor.

Aerodynamica · Post by **Aerodynamica** » Sat Feb 28, 2009 9:06 pm

Tis the front subframe but the rearmost mountings!