Obd2 P0304 Fault

[bigfoot2]

Hi all

on my previous post had trouble with malfunction engine light coming on.

problem found, but no solution just yet. used obd2 reader dtc p0304, new plugs champion E2 supposed to be equivilent to what is in galaxy 2.3, 2002, not too sure if they are. p0304 still coming up.

ok, i have swapped spark plug leads 3 + 4 to see if no. 4 lead was dodgy, no change, i swapped jets 3 + 4 around hoping to find a P0303 fault but im still gettin P0304 Cylinder 4 Misfire Detected. put in some jet cleaner.

cant think of much else really. will check for vacuum leak if someone can tell me wgere to look, if it was a vac leak then why cylinder no.4 fault and not the other cylinders. any way of testing the coil, its a 4 in one on the cylinder head.

thank you

regards