hello, my parents 99 old intrigue with almost 200k miles on it started sputtering. after pulling over it wouldnt crank over. we got a code P0304, cylinder 4 misfire. the fuel filter, plugs and wires were replaced about 6k miles ago. we pulled the plugs out they were fuel fouled, but each of them was getting a spark. we checked to make sure the plugs were getting fuel from the fuel bleeder valve, and it was. we were thinking of replacing the coil for cylinders 1/4 but dont want to spend the money if that might not be the cause. any help would be appreciated!