'73 318 timing issue maybe? Really need help

Jumped time is slang for timming chain skipped a tooth or two. Loosing the relation between crank and cam causes backfiring at tail pipe and/or pop back through the carb. Lets not go there yet though . Could just be flooded.
Block the choke butterfly wide open , hold the throttle to the floor and turn it over. Dont pump the pedal. That just floods it more. Results ?