[Healeys] Erratic Tachometer

[Len and/or Marge Hartnett]

My BJ8 tach has become erratic (not erotic although the needle is doing a
great shimmy and shake).  In 2004, it was steady but incorrect.  I replaced
the C2 capacitor per article by Frank Filangeri (can be found on John Sim's
web site) and that solved the inaccuracy problem. Now it fluctuates constantly
by a 100 or 200 rpm.  There are two other articles on John's site one of which
(author unknown) recommends replacing virtually every electronic bit and piece
in the tach.

I can not find anything in the archives specific to my current problem so
therefore my question is:  will replacing only the C2 capacitor solve my
erratic needle problem?  Is there something else I should check first?  I do
not relish the idea of replacing eleven items one by one and having to
reassemble and test each time.

(The Other) Len
Vacaville, CA, USA
1967 AH 3000 MkIII, HBJ8L39031