Isuzu Trooper Engine Misfire

My Trooper Is Missing When You Accelerate Sitting Still And Driving. Misses When You Go Up A Hill, So Bad That You Have To Get Off The Road...

Check Engine Light On, Check Codes Got Po300. Did Tuneup,replaced Fuel Filter, Now Light Blinks, Car Kind Of Surges And Light Stays On. What...

Engine Misfires Then Engine Check Light Comes On. Missfires On And Off When Driving. High Fuel Consumption. Engine Runs Lumpy On Tic Over....