Re: Thanks! - SU update and valve adjustment question

Hi Edie,

  The knurled nut is supposed to slide the vacuum advance diaphragm back
and forth in it's mount on the distributor.  The diaphragm is linked to
the breaker plate, which can rotate within the dizzy, thereby advancing
or retarding the spark.  Sounds like your diaphragm is stuck, so the nut
can't move it.  Perhaps some penetrating oil in the mount area and some
robust wiggling will free it up.  BTDT.

  Cheers,

  CR

Eddie Sheffield wrote:
> 
> I think mine must be broken or jammed then. It freely rotates (no clicks)
> about 1/2 turn, then it won't move at all, either direction.
> 
> Eddie
> 1971 Midget
> 

> >