Won't Start need advice, Please read....

Williaml, one thing to understand is that seeing spark across a spark plug gap in open air does not prove that you spark voltage is adequate. I takes much higher spark voltage to jump across that same small spark gap when it is inside an engine and trying to fire a compressed fuel-air mixture. So, you have not yet proven that the spark is good.

You need to take off the spark wire from the coil to the distributor at the distributor end, and place the wire tip 1/4" to 3.8" from metal and crank and look at the spark. An adequate park will jump that gap. The spark color should be a bright blue.

You can repeat that test through the distributor by putting that same wire back into the distributor cap, and taking a plug wire off of a plug and putting it 1/4"-3/8" from metal like before and looking for the same blue spark to jump that gap.

Understand that the voltage supplied to the ignition system changes from cranking phase to running phase of operation. So, it may fire while you have the key in START but not continue to do so when you release the key to RUN. It would be very useful for you at this point to get an inexpensive voltmeter to help us help you to troubleshoot this.

And if you would like to just throw one low cost part at it, put in a new ballast resistor. Get part number BWD RU19 as that is fairly close to the original; other ballasts do not have the right resistance value and will cause a weakened spark. A bad ballast resistor will cause the car to start but not be able to run when you release the key from START to RUN.

And be cautious with the starting fluid/ether; it is reportedly very hard on the cylinder walls, as it removes the residual cylinder oil. When I rarely use it, it is in very, very small amounts.