Stilo Change your spark plugs!

Right...STOP. Only change ONE PLUG AT A TIME. If you disconnect all the leads at once you could end up getting them mixed up...and trust me, you car won't like you much for it! To disconnect the lead from the coil, pull out the little yellow clip, and push down on the black bit that the yellow bit was under. With that depressed, the plug should slide off the coil freely.