Quote:
Originally Posted by Darrell Kinnan
Here's what I'm getting with the engine not running:
6 volts on the battery
2 volts at the coil
6 volts on the ignition side of the resistor
2.5 volts on the coil side of the resistor
Is the resistor taking too much from the coil? Engine starts but runs real rough.
Darrell
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Several issues here, but the big one appears to be the voltage drop across the ballast resistor. The coil needs a min of 3.5v (as already stated) and is better at around 4.0v. The battery should be greater than 6v not running, more in the 6.2-6.3 range and somewhere above 7v running.