Idle adjustment

[revray]

Good morning,

I have a 1980 300SD. Sometimes, mostly at a stop light, it seems that the car vibrates excessively. If I depress the accelerator just a little bit, the idle rises, and the vibration disappears. Would it be all right to raise the idle adjustment? And if so, how do I do it on my engine?

Thanks,
Ray
1980 300SD 193,000 miles

[jylee]

I am not sure if the older model car uses the same motor mount design as the new car. If they are, then the vibration may be from the motor mount.

jack

[revray]

Thanks Jack,

You're right, bad motor mounts can produce excessive vibration, but I've checked mine and they're still thick and in great condition.
Appreciate your help.

Thanks,
Ray