try some BG44k in a tank and also next time you change the oil get 2 cans of mopar combustion chamber cleaner aka: MCCC about $12 for 2 cans, use half a can normally by spraying through the throttle body with the engine running (get someone to hold the throttle at about 2k rpms so it doesn't die, then shut it down and let the engine cool, set the engine halfway between TDC and BDC so all the pistons are at halfway up, remove the plugs and spray the remaining can and a half into the cylinders, use some rags or paper towels to plug the sparkplug wells and let sit over night, the next morining, suck out the cleaner completely (as much as humanly possible turning the crank by hand helps) you won't believe how much crap comes out of the engine! finally change your oil (the cleaner seeps into the oil and thins it out so that it burns and doesn't work properly ) :cheers: