youn2433 said:
OK thanks..what can you tell me about that. I heard there is a cap over it which has to be drilled out?
You need to remove the plug that covers the Air/Fuel mixture screws. Carefully drill (1/8" drill bit will do fine) the center of the plug, be careful not to damage the screws, insert a small screw in the plug and with pliers work out the plug. Then carefully screw in the A/F screw until it gently bottoms (easy does it, you don't want to damage the seat), then back out the screws 2 1/4 turns, if it still has popping on decell/coasting back out the screws in 1/8 turn increments until popping is eliminated. (DONT GO BEYOND 3 TURNS, SCREW MAY FALL OUT).
HOPE THAT HELPS.