Spark plug gap and emisson

the spec is .043", for both the V6, and the Inline 4. The theory behind enlarging gaps, is that a larger gap creates a larger spark, thus more effecient ignition. The problem is, your ignition system was designed for the .043" spark plug gap, not larger. Enlarging the gap puts a greater strain on your ignition system components, and it may not be strong enough to jump a larger gap. The result would be less efficient combustion, or a cylinder(s) that won't fire at all. Pull your plugs, and set them at .043". Check the distributor cap, rotor, wires, and your filters. Make sure the car is totally warmed up before the smog test. Good luck.