so I pulled the front bank and found the plugs like this



this is a brand new plug since he swap... so less than an hour of use and its safe to say its fouled a bit... I cleaned the front bank off real quick and it managed to start and idle... I'm going to go and clean the back off real quick and see what type of readings I get...

but the question is whats the cause of this... I would think the vaccum leak thats now fixed is the source but will ceaning the plugs up a bit and letting it idle for awhile burn off the rest of the carbon I can't get to and salvage the plugs? or more importantly do you think its more than just fuel that caused this?