my jaguar xj6 1977 clunks when put in revers gear
 

my 1977 xj6 4.2 outo coupe seems to lump
into revers gear have owned this car for 25 years
can somebody give some ideas what to look for
please
regards john

In the blind, but these thoughts come to mind.

1. Idle speed is too fast. 500 to no more than 650 seems best on the 4..2.

2. Worn engine mounts.

3. Most likely. One or more failing universal joints. tere are a lot of them in this cars drive line!!

6. Loose center drive shaft support.

7. Failing transmission mount. A curious device that seems far more complex than needed.

8. Make sure your foot is off the loud pedal when you move the shift lever. Large sized foot wear can do that!!

Carl

Carl