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Tommy,
the A-4 is a simple engine.
Even with the electronic ign. system, you don't need a really high perf. coil. you have a 4 cyl engine, not a v-8, hence, "coil soak time" is not a problem, heat, however is.
Any decent 12 volt internally ballasted coil will work just fine.
from your problem description, and temporary solve(pouring gas in the carb) its fuel related.
Check these things.
Float bowl and needle valve operation. It might be a good time to rebuild the carb. dribbling some gas into the breather keeps fuel flowing, allowing the engine to run, but if you stop, so does the motor. That says fuel supply which is controlled by...
a) fuel pump and pressure. you need about 4 lbs of pressure to keep the gas flowing. thats not a lot.
b) float bowl and needle valve sticking in closed position (or set too low)
Gas is not sucked up into motor by vacuum UNTIL it hits the bowl in the carb. Its pushed to the needle valve by the pump. The float regulates the level of fuel in the bowl via the needle valve. If the needle valve is stuck closed, then no fuel gets to the bowl. (this isn't very common, the fuel pressure "should" be enough to overcome that.)
It may be the gasket between the carb and the intake, but that rarely is the problem, I'd hazard a guess on fuel supply to the carb or the carb being full of gunga munga. (technical term)
DO NOT confuse the nedle valve in the bowl with the "idle" needle screw on some carbs, they're two different things.
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