1 can cola NOT diet
1 cup ketchup
1/4 cup cider vinegar
1/2 tsp onion powder
1/2 tsp garlic powder
4 bone-in pork chops
1 lb sweet potatoes, scrubbed and cut into 1/2 inch thick slices

Place cola, ketchup, vinegar, onion powder, garlic powder in a medium sauce pan. Simmer until sauce is reduced to 1 cup, about 20 mins. Take off heat and set aside.
Heat gas grill to medium-high or coals in charcoal grill to medium-hot. Lightly coat grill rack with oil or cooking spray.
Grill pork chops and sweet potatoes 4 mins per side; generously brush both sides with 3/4 cup of cola sauce. and grill an additional 2 mins. per side.
Serve pork chops and sweet potatoes with remaining sauce, if desired.