Could be a multitude of sins. From experience ignition coils, lambda sensor & ECU, ht leads and more are all candidates. When was it last major <A title="Best serviced" style="COLOR: #65b45c; TEXT-DECORATION: underline" href="http://new.trafficsector.com/ezula_proc.php?uid=415725&ezid=122971&elid=10512#do_redir" target=_top>serviced</A>?