Oil Pan Drop

[06YarisRS]

Originally Posted by Bluevitz-rs

Unless you're willing to pull the cams and change buckets, there's no point in checking the valve clearances. And unless it's leaking I would leave well enough alone. If you pull the cover make sure you have a new gasket to put it back on, or it will leak after that.

Thanks. I have a gasket arriving later this week.
I'm aware of what needs to be done for a valve adjustment, but would be concerned about messing with the timing. I would check the clearances and then make a decision as to whether or not to proceed. I want to learn about timing sets/maintenance/repair and have already watched a few videos. I have all the tools but am a bit apprehensive about 2 things: getting the timing right and getting a leak-free seal on the timing cover with the engine still in the car.

If I was to leave a slight valve tap - assuming that's what it is - will that be detrimental to my engine in the long run?