Lately, opening and closing my right door requires a lot of push or pull (strenght). I know it's not the handle, it's something inside the door, the rail/arm or thing that slides in or out when open the door, it's getting rusty or something, it has never been this hard in the beginning. I tried oiling the sliding rail/arm awhile back but no help. Do I need to actually open the door up and see what's wrong with it?

 

Any lead will greatly be appreciated.

 

Thanks in advance...

Never mind, just found out that the door hinges are rusty as the car is basically a one-person vehicle so virtually no one sits on the passenger side so the door was virtually left unused for months. Just spray some WD40 on the hinges hopefully they will swing out easier.

 

Thanks for reading!