I HAVE AN 87 RAMCHARGER WITH A 318 MOTOR.THE PROBLEM I AM HAVING IS THAT ON A COLD START IT STARTS AND STALLS.IT DOES THIS 2 OR 3 TIMES AND THEN IT WILL STAY RUNNING.ONCE IT IS WARMED UP IT WILL IDLE GREAT BUT FOR NO REASON THE IDLE WILL DROP DOWN TO ALMOST NOTHING AND IT WILL SKIP LIKE CRAZY.I HAVE REPLACED THE PLUGS,WIRES,DIST. CAP,ROTOR, AND FUEL FILTER.I HAVE COVERED THE CARB WITH MY HAND AND THE IDLE WILL PICK UP TO WHERE IT BELONGS.REMOVE MY HAND AND IT DROPS AND STARTS SKIPPING.I HAVE SPRAYED THE EGR VALVE AND THE IDLE GOES UP AND DROPS DOWN.CHOKE IS WORKING OK.IT'S NOT LOADING UP ON GAS.NO FUMES.I'M AT A LOSS.