Murfy101

Hey guys I have a 94 3.0 v6 4Runner with 188,xxx miles there is a noise that just started and is there from start up and doesn't go away or get worse either, it is on the drivers side front of the motor kinda sounds like under the valve cover its like a tapping sounds not a tick but a tap lol really tho, I did some research and found that I might need a new lifter shim? First Toyota so I'm clueless on what problems I will run into and such. Any positive input is welcome thanks guys!!!