my valve are making noise on 1996 Saturn SL

i dont have a code why are my valves making noise i bought it used had for about 6 months it been making noise since I bought a woman going along they told me it was something else

Asked by for the 1996 Saturn SL
Upper end engine noises most likely could be lifters and not valves but also could be valves, oil pressure and quantity can effect the lifters, check oil level and add as needed, do not overfill, have a qualified shop run a compression check and oil pressure check.