Anyways! I found this thread (http://www.sxoc.com/vbb/showthread.php?t=494612) on the SXOC which is kinda whats going on with mine currently, so I took off the coilpacks today (busy moving so I haven't had alot of free time) and removed the rubbers which pop in over the spark plugs.
Pic

The last one at the far left, thats cylinder No.4's coilpack. I noticed that the...errr...button type thingy on the bottom of it is stuck in its current position, unlike the others which move around freely and come out by quite abit.
Is this the cause of my problem? Not enough spark going to the spark plug? Thanks guys!