The firing order is 1-3-4-2 you have to watch because the misfire may carry over into the next cylinder. What cylinder is miss firing MORE? a TECH 2 can see counts so if cylinder 4 has a 1000 counts and cylinder 2 has 100 more then likely your "bad" cylinder is 4. As stated before if you question the plugs get some new ones. Sometimes I forget that not everyone has access to a Tech 2 so I do apologize Im just trying to give you the best info I can and relate to what I see in the field.