NGK Part number

Chuck,The carbon build up on the piston and valves and it not a chunk rolling around....
View attachment Piston Carbon.jpg


[ame="http://www.youtube.com/watch?v=6EZmYyrAU58"]Mopar Combustion Chamber Cleaner - YouTube[/ame]

MOPAR Combustion Chamber Cleaner, 13 Oz. Aerosol Can

http://www.jeep4x4center.com/mopar-combustion-chamber-cleaner-13-oz-aerosol-can-4318001ad.html