273 won't start regularly

sas73 said

Pulled plugs 3 and 8, photos attached. There seemed to be some oily gas on 8, but 3 was drier with a little oily residue. Photos attached.

Then I replaced the plugs and ran a wire from battery to (+) end of coil and tried to start - nothing different. No fire.

Click to expand...

Did you replaced the plugs with new ones? I've never had any luck cleaning gas fouled plugs. I will assume they fouled from the no start condition otherwise a carb rebuild is in order.
Check the coil. Had this problem on my sons 273. It would work then fail.
http://www.mymopar.com/coiltest.htm
Also, check the distributor shaft for play.