Quote:
Originally Posted by BLACKCDI
Another thread with a question on my "new to me" 1995 300D.
The engine starts and runs very well, but it's vibrating at idle...when it's running and you look at the engine you can see the vibration, you can feel the steering wheel vibrating too, when the drivers door is open you can also clearly see the vibration of the door.
It is vibrating way more than my 1987 300D engine. I have new engine mounts in 1987 so inside you can't even tell the engine is running. So is this just the engine mounts or is there some other Issue that makes the engine vibrate excessively?
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Definitely look at the engine mounts first. Bad engine mounts will definitely get you shaking ... like Jimmy's my 300D had an oozing mount a few years ago. New ones made it so I couldn't even tell the engine was running other than the sound. You could also check the transmission mount behind the transmission yolk.
You could also check the idle speed of the engine ... if it's idling very low it could be kind of rough. Though you can tell that pretty quick by looking at the tachometer.
If all that is in perfect order, and it's still shaking, I would guess maybe a bad injector or poor compression on a cylinder, but some of the other guys could probably weigh in better on that.
Check the engine mounts before anything else. 
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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)
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