Bluff or not?

[Roy6]

I was very tempted to make a move on the turn. Villain is unknown, this is my first orbit.

I think a turn C/R is good if I don't follow up on the river if I don't hit. Another option is to donk, but it has lower folding equity.

Party Poker 3.00/6.00 Hold'em <font color="#0000FF">(5 handed)</font> link

Preflop: Hero is BB with J[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 folds</font>, <font color="#CC3333">CO raises</font>, <font color="#666666">2 folds</font>, Hero calls.

Flop: (4.33 SB) 6[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, Hero calls.

Turn: (3.17 BB) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, Hero calls.

River: (5.17 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, Hero folds.

Final Pot: 6.17 BB.