Two suspects are accused of shooting a Port Washington man while they tried to carjack him Sunday.  The 18-year-old victim tells investigators he was sitting in his car outside his parents’ house in the downtown area at about 10:30 P-M when the two men ordered him out of the car.  When he put it in gear to drive away, one of the men started shooting.  The victim’s name hasn’t been released.  He was hit twice and drove himself to the nearby police headquarters for help.  His injuries aren’t thought to be life-threatening.  The two suspects were arrested the next day.