You need to make sure that you have a good layer of fat under the skin of your pork.
COOKING A PORK ROAST IN THE OVEN
The best thing about cooking roast pork is that it is pretty much set and forget. Once you have given it that first blast of heat at a high temperature, you can turn the heat down to 375 F / 190 C and just leave it alone.
A roast pork dinner is one of my favorite family meals. It is easy to prepare, delicious to eat and everybody loves it!