Trick sure to go wrong? (4)
I believe the answer is:
ruse
'trick' is the definition.
(I've seen this in another clue)
'sure to go wrong?' is the wordplay.
'to go wrong?' indicates anagramming the letters (I've seen 'going wrong' mean this).
'sure' is an anagram of 'RUSE'.
(Other definitions for ruse that I've seen before include "Ploy, artifice" , "Sue to be a ploy" , "Sure to be a trick" , "Plan intended to deceive" , "Deceptive manoeuvre" .)