My 00 Limited has recently started ticking/tapping a bit. I've searched around quite a bit and haven't seemed to find anything that strikes me as my issue. I'm mechanically inclined but I do live in a condo and don't really have a place to work on the truck. It is also my daily driver.

The truck has 225k on the clock. I've owned it for 4 years and about 40k miles. About 18 months ago, it did have the Catalytic converter replaced with an aftermarket unit. It has been maintained well overall but does need a few things currently. I am overdue on timing belt/water pump/valve adjustment and it has a leaking valve cover. It should probably also get spark plugs/tune-up. The plug wires are red so I am assuming non-OEM. I recently added about a quart of oil to it after 4k of driving since changed. It was still on the dipstick but a little bit below the minimum line. I do not think that is low enough for concern of rod knock/damage but figured I'd throw it in there just in case. I've used OEM filters and Mobil 1, as did the previous owner. I am hoping to move to a house with a garage this summer so I've been waiting until I can do it all myself. I do have another vehicle I can drive if need be but it is currently put away for winter and I'd rather keep it that way.

The ticking is not noticeable while driving but is very prominent at lower speeds, especially in parking lots/garages. It is barely noticeable when engine is cold but very noticeable when the engine is warm. It is 100% rpm dependent and seems to be coming from the passenger side cylinder bank but is hard to tell. I know these engines tick a bit so I'm hoping that maybe someone recognizes it immediately.

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