u/AD-1325

Got a check engine light the code is P0303 which appears to be a misfire in cylinder three. I changed all spark plugs and changed the coil to cylinder three. Confirmed there is a spark generated from the new coil and new spark plug. The code keeps coming back and after doing some research It appears I either have one of two problems, injector or compression issues which would be the worst of the two.

Planning on taking it to a shop or a compression test. Anyone else have this issue? Am I missing anything else that I should try?

The vehicle only has 81,000 miles and is in pretty good shape. I’m concerned that if I have compression issues it’s going to be expensive and I will have to just take the hit and sell the vehicle.