Check the front tires for uneven wear patterns. If either tire is worn more on the right edge, it is leaning that way and will pull that way. If the wear looks good, switch the two front tires side-to-side. If it pulls the other way or goes straight, you have a tire pull. If it still pulls to the right, have the steering and suspension parts inspected at a tire and alignment shop, and have a four-wheel alignment performed.