Thats an FB dizzy (81-85). You can get the FSM at
http://foxed.ca/index.php?page=rx7manual#firstgen.
You can adjust the mag pickups but thats about it.
I would do a tuneup first. Replace wires, make sure grounds are good, new plugs, cap rotor etc.
If you still have issues look in the FSM for testing the ignitors. Sometimes they go bad
but not often. Its usually some supporting issue like connections and wires.
All that said, it may have nothing to do with the dizzy or the carb.
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1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs
Project Fat Nikki Budget 12A rebuild Video setup < $30.00