Re: Kids, Cars, and a no start LBC

  Some of the later model cars had an arrangement to vent the intake
manifold in order to retard the spark during deceleration.  I don't know
from Ausits though.

  Cheers,

  CR

Fred Pixley wrote:
> 
> ryan marro wrote:
> 
> > My distributor has the "tin man's hat" (vacuum capsule) on it, but has a
> > rubber cover over the nipple that should/would connect to the carburettor
> 
> In 1977 British Leyland may have intended it that way.  My 1977 Austin
> Marina has that exact fitting on the distributor and is correct according to
> the emissions diagrams.  They must have had a batch of 45D4 distributors for
> use with the Zenith Stromberg carburettor that were not supposed to have a
> vacuum assist.  The vacuum unit is there but unused.  Other models years
> were different.
> 
> I think the lack of vacuum advance is to achieve lower exhaust emissions in
> the later years and I plan to reconnect the advance if the distributor will
> in fact yield an advance with vacuum applied.  Just apply  a vacuum to it
> with the engine idling and a timing light connected to find out.  The
> benefits should be better performance and improved fuel consumption.
> 
> Fred