My 84 190E w/ 166,000 miles has some bizarre knocking only on left hand turns. Just the slightest fraction of a degree turn of the wheel to make lefts will get a knocking over small bumps.

New ball joints, wheel bearings, idler arm bush, all links look tight, caliper tight, struts changed some time ago, bushings/sawy bar and control arm look good.

I have traced it back to the steering box. It is mounted solidly but the arm has some play. Do these things go bad often? Strange that only lefts draw a noise. Can I tighten something up on it or add some 'marvel mystery lube'?

Any thoughts folks?

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Patrick Leber
'84 190E 2.3
'83 Porsche 944 (track car)
'84 Porsche 944 (parts car)
85.5 Porsche 944 (sled)