[This followup was posted to alt.autos.volvo and a copy was sent to the cited author.] I took the plastic cover off of the top of the engine and saw that there were individual coils on top of each plug. Do you just remove the bolt and lift up the coil to then unscrew the plug? Also does this car use standard plugs or those plugs with 3 or 4 electrodes? Thanks in advance ....Larry