Emissions issues!

[Dave]

seriously, put the old plugs back in, seafoam that bitch, change the oil. put the new plugs in and try again. It is truly amazing stuff. I'd probably put some octane booster in too (it's snake oil to me, but sounds like you need help from a higher power).

And if you do seafoam, be sure to change the oil immediately. Think of all the nasty shit that gets loosened up getting into your oil...