If you have a variable speed electric drill that will run backward, gently
connect it to the tach drive cable at the distributor end. If the tach
still bounces, chances are the cable is the problem. Just had the same
problem w/ a speedo. Was told it had to be the right angle drive on the
trans/o'd. Did the test w/ the drill and a very good drive cable, and the
bounce was gone.
> mecanical tack in BN-4-bounces like crazy between 0 and 2,000 rpms then
> settles out. Was disconected from dist in the spring but seems to be tight
> enough. suggestions?
>
> Carl
> BN-4(L), 1957
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