What make, model, year, and engine size. Impossible to answer without that information.
a bad wire or a bad coil to cylinder 5.
I can't tell from here. Check the spark plug in the #5 cylinder, and the ignition wire to the plug.
Four cylinder, 1-3-4-2. Six cylinder, 1-6-5-4-3-2. Eight cylinder, 1-8-4-3-6-5-7-2.
cylinder 5 missfire detected. could be plug, wire, or bad coil...
replace coil module, or may be just a bad spark plug wire.
For the coil which is closest the the radiator: first wire goes in the cylinder one (first one from the passenger's fender). Second wire in the coil goes in the cylinder #3. For the second coil which is closest the firewall, first wire starting from radiator goes in the cylinder #2 and second wire in the #4.
CHECK WIRE
red wire
P0304 is a cylinder #4 misfire. Check plug, wire, coil, etc.P0304 is a cylinder #4 misfire. Check plug, wire, coil, etc.
Defective spark plug or plug wire. Can also be blown head gasket or burnt valve.
if a cylinder is not firing there will be no spark at the spark plug. Carefully twist as you pull the ignition wire out and start the engine. when the wire gets close to the spark plug you should see an arc. This means the cylinder is firing
It means #7 cylinder is not firing properly. Could be a bad plug or plug wire on that cylinder.