I have a 1990 760 that I have owned for 9 years. The drive shaft knocks when accelerating from a standstill, under load (uphill) at around 1800 rpm. Coming up my inclined driveway. It does it everytime, at the same speed, and has for several years. The knock feels and sounds like it it under the center console. It never does anything odd at speed. It is a minor annoyance but I have decided to see if I can fix it.
The u-joints and centerline bearing and housing as sound.
Any ideas would be appreciated.
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