City are at Luton today after failing to win the past four Premier League games.
“Of course we have to help them but we always have a tendency when we lose to say they aren't hungry. I don't believe it for one second," he stated.
“It's too simple to say when we lose the games it's because we don't run, we don't have character. If that happened I'd have a real problem.
“I said many times I've never seen players that go out on the pitch and don't want to win.
“They don't want to go out in front of 60,000 people and play bad but sometimes because you won a lot and need a punch in the face to improve. Now we'll see."
Guardiola also said: “I will help the team to come back, absolutely.
“Will it be enough? I don't know. The contenders are so strong, Liverpool are back, for many reasons, Jurgen [Klopp] it always happens and all the other teams, we've seen the quality.
“Aston Villa were much better than us, they should've lost to Bournemouth but got a draw, this is the competition.
“Tottenham, they lost to West Ham, many things will happen and we have to be ready. To win at Luton we have to realise how difficult it is."