99 Sebring JXI 2.5 Started misfiring after 45 min. of driving. Downloaded code and was P0304. Replaced Plug and checked plug wire (new) 3.65k ohms. Replaced distributor cap. Removed intake and swaped # 2 & 4 injector. No change. Checked injector with ohm meter,checked good. Am I missing something here?

 

Compression test time...youre finished with the simple cures....