"floating" plug wires

[Masamune]

This is quite a strange occurence in my car. I just replaced the fuel filter in my car (lord knows the last time it was changed) and after starting up, I noticed that the cylinder #2 spark plug wire seemed to be floating . It also didn't seem to want to go down all the way. Now when I say floating, I mean that you could visually see it moving up and down. I'm totally confused on what the hell is going on. On a better note, my engine runs supremely better with the replaced filter. There is still a mis-fire though. this friggin car is gonna be the end of me...

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