Very quick one - how easy are coil packs to replace? My car has developed a pretty horrendous misfire during certain times. Its pretty intermittent at the moment but going to address it before it becomes a problem.
Plan on getting codes read to work out which coil it is but then plan on doing corrective work myself.
Most technical thing I've ever done is change my filter to an induction kit, have most basic tools I should need.
