is this fold too weak?

[Girchuck]

Typical 1-2 game.
Holding K [img]/images/graemlins/heart.gif[/img]8 [img]/images/graemlins/heart.gif[/img] in BB
three limp, SB folds, I check
the flop is
7 [img]/images/graemlins/club.gif[/img] T [img]/images/graemlins/heart.gif[/img] Q [img]/images/graemlins/club.gif[/img]
I check and its checked around.
the turn is K [img]/images/graemlins/club.gif[/img]
I bet, EP raises, two others cold-call, and I fold.
Is the turn bet wrong, or is this fold wrong?