The Republic of Ireland front man believes it is only a matter of time before his old Liverpool team-mate starts scoring, and has backed Harry Redknapp to become England boss
The Spanish striker’s profligacy has led to him being withdraw from Vicente del Bosque’s squad selection for Wednesday’s friendly against Venezuela.
The Irishman, who played alongside Torres during his six-month spell at Liverpool in 2008, is unsure as to why Torres’ form has slumped since he completed his £50 million move to Stamford Bridge, but remains hopeful he still possesses the attributes to become lethal in front of goal again.
"I don't know the reasons, to be honest with you,” Keane told reporters. “All I can say is he's a top player and his record speaks for itself.
“At this moment in time, it's not going too well for him, he's not scoring, but whether it's the system of the team or that his confidence has gone, I'm not really too sure. I can only judge him on when I played with him and how good he was and the goals he scored.
“Maybe the manager chopping and changing all the time hasn't helped him. There's no question he is certainly low on confidence. But he is a great, great fella and I really wish he turns it around - and I am sure he will, there is no question about it.
"What he has done since he came to England, taking away the time at Chelsea, what he has done has been brilliant and his goalscoring record speaks for itself.
“I just hope he can get back to scoring goals like he does - I think everyone wishes that whether you are a Chelsea fan or not.
"To be fair to him, he has kept his head down, he has never come out and slagged anyone off, or he has never been disrespectful to Chelsea at all. The sooner he starts scoring goals, the better, and I am sure he will do."
Keane is also tipping his former manager Harry Redknapp to take over the managerial reins of England following Fabio Capello’s departure.
He added: "There is certainly only one candidate at the moment. Me personally, I think it's only going to happen that he's going to take over. The whole of England I think wants him, and certainly the players do, so I certainly think that will be the case.
"Whether that's in the next month or so or at the end of the season, I am not too sure. But I am sure the Spurs fans wouldn't be too happy with him leaving because of the job he has done there."
The 31-year-old recently enjoyed a loan spell at Aston Villa and insisted all the players are behind under-pressure manager Alex McLeish following a poor run of results.
"I have really enjoyed working with him,” he said. “He's a great manager. I know at the moment it's not going as well as probably he would like, and the club certainly.
"But all you want in a manager when you work with someone is someone who is honest with you, and they don't come any more honest than him.
"He is desperate for the team to do well. At this time he has been getting a little bit of flack from the fans, but that doesn't reflect on how good a manager is; the reason being that he has come from Birmingham, who are their rivals.
"The only thing I could say is the players are 100 per cent behind him. They really enjoy working with him.