gys my civic 95 with d15b3...have an issue with ac f some expert can help.... when i swithc on ac the car becomes too heavy sort of and jhatkai type marte hai ... had shown to mechanic he adjusted race from the back black screw but still the problem persist... can anyone have any idea what the problem can be... m driving it on petrol since long and pehlai kabhe cng pai bhe yai problem nahe de thee...