my stock cd player only plays when it wants to. its a 93 so I figure it wont play cdr's but even regular cds, it only plays certain ones. lens? I dont know whats wrong?

it wouldnt hurt to clean the lens. either that or its time for a new deck

my guess is that that old deck has just gotten pretty tired out, try buying one of the lens cleaner kits and save up for a new deck