I'm looking for a little help I recently bought a 02 a4 1.8 quattro about 3 months ago , the other day a spark plug came off completely i replaced it but the following day it was a little loose again and i tightened it up but the coilpack keeps on coming off making my car run like crap. Would that be the coilpack or the spark plug being striped? Oh and another thing my a4 is running lean and something about bank 1 if anybody can help me i would appreciate it.

 

Depends on what kind of coil pack you have. Most of them are "push down" style unless you get after market hitachi's that are screw down. Are you getting a check engine light?

 

yes the check engine light is on and it flashes when it loosens up, and I have the stock coilpacks.