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Q:

my 1993 subaru impreza is only firing on cylinders 3 and 4 on 1993 Subaru Impreza

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
ive changed cam an crank sensors and checked timing an fuel an also changed ignition module
(1) Answer
Check compression on #1&2 RE-check cam timing.