I have a 1970 280S that will not start. Last time I drove it it ran fine. Went to start it a couple of weeks later and all I got was a continuos cranking from the starter. Then I discovered that my ignition switch would not always turn off the power. In other words, I could turn the key off and the starter motor would continue cranking until I disconnected the battery. The car had a Pertronix i9gnition with Flamethrower coil. I assumed, after numerous attempts at trying to start the car, that the Pertronix unit got fried as they don't like long ignition on mode. So, I have done the following to no avail:
1. Bought and installed a new Hot Spark unit with a new 1.5ohm Flamethrower coil.
2. Checked to be sure there was fuel to the carbs, no issue there as the car has a new fuel pump.
3. Checked the fuses in the fuse box, no issue there either
4. Bought and installed a new Mercedes ignition switch, I really thought this was it, but no luck.
When I hook a test light to the power side of the coil and the ground to battery, I get bright illumination of the light and when the ignition is turned on to the cranking position, the engine turns over, the light dims and pulses slightly. I pulled a spark plug with wire attached to check for spark, nothing, but I'm not sure it was positioned correctly as I have no assistance.
I have done everything I know how to do and am at my wits end. Is there a fusable link somewhere I may have fried. Should I bow to the east during a full moon and chant?
Any help will be most appreciated.
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