I have a 1980 300sd turbo. At idle the engine wobbles (shakes) It does it most of the time. Some times it doesn't do it at all. Sometimes If im at a light and give it some gas and bring the RPM up to 1500 for about 10-15 seconds then stop and let it return back to idle. The wobble is gone and idles great.. Not all the time though.
Thanks for any ideas!