Werner had the ball in the back of the net after rounding Alisson Becker and clipping into the empty goal but saw his effort ruled out by the narrowest of offside calls.
The Germany international has now scored just one goal in his past 18 Premier League games but his overall performances have improved since Tuchel’s arrival.
He was a constant threat in behind the Liverpool defence playing off the shoulder, although it took a moment of magic from Mason Mount to break the deadlock and secure the three points for the Blues.
The result lifted them into the Champions League spots and extended Tuchel’s unbeaten start as Chelsea manager.
Tuchel was satisfied with the efforts of his misfiring striker – who also missed a glorious opportunity in the first half – and told him he doesn’t need to ‘worry too much’ about his lack of goals.
And he advised him that as long as he keeps applying himself, he will be a success at Stamford Bridge.
‘I demand 100% in every training, I don’t allow self-pity,’ Tuchel said.
‘Timo is full of talent and plays for one of the best clubs in the world, in one of the best leagues in the world. So there is no need for him to worry too much.
‘We are not counting the minutes [to goals] and for me and my approach it is not an issue.’