how does the superbeetle react if a plug is fouled
I would pull and inspect the plugs sounds like two are not firing.
Bugs are hard on spark plugs normally, add in this trash we have for fuel, a little to rich on the choke, a cold carb, and plugs just won't lady long, I always carried around an extra set in the car, you never know when one would just quit working. Make sure you don't have a carbon track in the distributor cap, that can also cause you symptom.
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