Such great suggestions! Let me answer some questions...

Car is a '08 XC70 with the 3.2 v6. 240,000 miles with no monkeying around... no modifications.
fuel mileage is poor the glove did want to get sucked in pretty good haven't changed plugs lately, I'll take a look today I've never replaced the ...

I have looked and I have found multiple posts. I am not afraid to fix my car but I am hoping that you nice folks will help me once and for all with some troubleshooting.....

My car has eaten up many coils. They are easy to replace and I assumed that after 240,000 miles I should expect a few to burn ...