Turn semi-bluff w/ an all-in

[alta_chuttes]

opponent had been loose preflop in the 40 hands or so, hadn't seemed too aggro preflop. Is a turn raise here valid or spewing?

Party Poker 3/6 Hold'em (6 max, 6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is Button with K/images/graemlins/heart.gif, 4/images/graemlins/heart.gif.
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, SB calls.

Flop: (5 SB) 4/images/graemlins/diamond.gif, 8/images/graemlins/club.gif, 6/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, SB calls.

Turn: (3.50 BB) T/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>,

[Gambler]

I like the raise. If he had a real hand he would probably check raise you. Even if you are behind you have a lot of outs to suck out.