Can the engine timing be to advanced?

I have a 2002 Kia Rio. THe problem was I changed the head Gasket, but I think I put the timing to Advanced. It Takes to Much time to accelerate. Two days Ago I had my foot completely down to the pedal and it wouldn't accelerate more than 2000 rpm. Can it be the timing? Also there is like this pinging and Knock. Why?|||how did you adjust the timing? i'm pretty sure that's all set at the factory on a car that new