first off, check the oil level in the engine changing plugs and valve cover gasket should not affect the oil pump.you might also check to see if oil pressure is showing on gauge in dash
Sometimes a ticking sound is a valve lifter. The faster you go the faster the ticking will be. Make sure first it is not something stuck in a tire or something on the fan belt.
That is possible.
Something disastrous out come
Exhaust system as it cools.
It can be a hole in your exhaust system or it can have something to do with your engine.
The present Big Ben started ticking on 31 May 1859.
No. The word ticking is a verb form, or a noun, or an adjective (ticking clock). But it is not used as an adverb.
the ticking is the blinkers
Time Is Ticking Out was created in 2001.
If the ticking sounds like a "normal" ticking, it is probably the fuel injectors.
Ticking Clock was created on 2011-01-04.
A normal ticking is the fuel injectors opening and closing, a very loud ticking with bad mileage and poor performance may be a sticky lifter, aka hydraulic valve lash adjuster. If the latter try something like Marvel's Mystery Oil or another sticky lifter nostrum before launching into a difficuly and expensive replacement.