chris97subaru

The timing belt was changed recently along with water pump,belt tensioner and thermostat.Ran great for a couple of weeks.Then over this past weekend the check engine light came on and it started to run rough and have a low idle.After ten minutes the check engine light will flash.Both cams on the 1 and 3 side were replaced before I bought the car.

97 Outback Legacy.Check Engine Codes P0301,P0303.Misfires in Cylinders 1 and 3.Distributor Coil has been replaced.I swapped out distributor wire from cylinder2 to cylinder 1 still same errors.If I replace spark plugs and perform comprerssion test and the codes are still present what would the next step be?Or should I try something else first?