Thank you Paul. I will check this out after work. The light stayed off
and it does work normally so hopefully this should fix it right up.
'71 B roadster
'74 BGT bastardization with big aluminum heart :)
'63 Buick 215 cubic inch 'heart'
On Tue, 10 Aug 1999, Paul Hunt wrote:
> If the tach instantly drops then it is definitely the ignition LT circuit
> i.e. ignition - coil - points/capacitor. If the ignition warning lamp came
> on then it is 12v going off the white or brown./white circuit for some
> reason i.e. ignition switch or ignition relay. If the ignition warning
> light stayed off (and it normally works!) then it is the 12v feed to the
> coil, the coil itself, points, or capacitor. The coil can go open circuit
> as it warms up, then 'heal itself as it cools again. The capacitor could be
> short. The wiring inside the distributor could have frayed and be
> grounding. Check that you have 12v both sides of the coil with the points
> open, and ground one side and 12v (or 6v if it is a ballasted system) the
> other when they are closed.
> or if that doesn't work try