Problem with a serca noise of the valve cover

Hello first I thank the people who can help me I have a problem a while ago I broke the turbo and take a while to buy it and change it after changing the turbo the car starts well but it has a serca noise of the rocker's lid That the taes are not hydraulic were only fixed or pushers as they are called (it is a FQ9 engine of a 1.9 120CV diesel) renault) so if the problem is of the taes I do not know which of them may be wrong or know how to find with the or if someone has an idea of ​​what the noise can be.
Thanks in advance and greetings.