Try not to lift the lid of the cooker at any other time. When the pork reaches an internal temperature of 165 to 170 degrees F on an instant read meat thermometer (after about 4 to 5 hours), remove it from the grill and double wrap in aluminum foil to keep the juices from leaking out.ry not to lift the lid of the cooker at any other time. When the pork reaches an internal temperature of 165 to 170 degrees F on an instant read meat thermometer (after about 4 to 5 hours), remove it from the grill and double wrap in aluminum foil to keep the juices from leaking out.