I'm not sure, but I do believe that may be protected under PA's 'lemon law'. You may be able to find info on it online. If worse comes to worse, depending on how much you paid for the car, you could also take the person to small claims court, and sue him for your money back. Keep records of all transactions. Also, in the future, take any used vehicle to a certified mechanic to have it inspected or checked before buying. Good luck!