<VV> NO SPARK AT COIL - WEEKEND UPDATE...

[Dave Keillor]

The negative wire on the coil does not go directly to ground but to the
points in the distributor.  The points periodically supply the ground as
the distributor rotates.  The negative also supplies the tach signal (the
negative side of the coil pulses as the points ground and unground the
connection).  If your tach wire is grounded somewhere, it will act as a
kill switch.

Dave Keillor

On Mon, Jun 25, 2012 at 11:40 AM, rod murray <rmurray8996 at gmail.com> wrote:

> the good news...the car is running!!!!!  big props to dave for getting me
> to this point...however, i'm not out of the woods yet....
>
> the bad news...
> 1)  trouble-shooting has isolated part of the problem at the negative wire
> to the coil.  for some reason, it is acting as a "kill" wire...ie, the car
> starts/runs only when this wire is removed from the coil.
> 2)  when above wire is removed from coil, engine runs but the "gen" light
> is on, and the battery does not show any increase in voltage (per dave, V
> at battery should be up closer to 15V while running to indicate battery is
> charging).  i swapped out a fresh alternator from the rebuilt van engine
> thinking this could be an internal voltage regulator issue, but showed no
> change.
>
> at this point, original flamethrower II coil and pertronix e-points are
> both re-installed, replacement e-fuel pump is pumping, coil ground wire is
> disconnected, engine runs, gen light is on, and battery shows 12V whether
> ignition is on or off...
>
> next up is to trace the ground wire "kill" and gen light issues...any
> suggestions?
>
> thx all! and especially you dave!
>
> - rod
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