164 no spark

["Dave Partridge" <veloce76@domain.elided>]

Karl,
Before anything else there has to be 12V at the + side of the coil.
If it's not there nothing will make the engine start. It should switch on 
and off with the ignition switch. If it's not there follow the + side wire 
backwards to where you find 12V and fix the open. It could be a relay or a 
switch maybe a fuse. It could possibly be the - side of the coil. That 
should appear to swing from ground to some positive voltage when you crank 
the engine over. If that doesn't move (switch) it could be one of the tiny 
little wires coming from your magnetic pickup coil in the distributor, this 
would fail to tell your ECU (tested right?) to interupt the ground circuit 
to the coil. A wiring schematic would make it a lot easier. The most common 
failure I have seen personally is a wire or wires from the pickup coil 
breaking. They get flexed as the timing advances and retards during 
acceleration.
Good luck.
Dave Partridge
76 Spider
by no means an expert but I've been down this road a few times
Minnesota

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