What could be causing my 2004 lincoln town car to start ticking when i start up but after a few minutes it stops and it runs good?
Is there any way i can fix this myself and is something i can take care of later?
You can keep driving it for the time being, it won't damage anything. Won't cause any damage but you might notice the engine running imperfectly while it is making the noise. If it is an exhaust manifold leak I don't think it's a good idea to try to fix it yourself.
I hate to disagree with Ghost133 but, you really ought to make sure the ticking is coming from the exhaust.
I have seen a handful of 4.6 motors that develop a ticking because the timing chains are "lose". The 4.6 motors are designed to have a hydraulic cylinder press a plastic guide against the chain's long side to take up tension.
While the car is at rest the tensioner slackens and allows the timing chain to be loose. This causes a ticking sound at the front of the motor until the oil pressure builds up enough to tighten the chains.
The three theories of why this happens are; 1) Wrong weight of oil used, 2) Wrong oil filter that allows oil to drain while the car is stopped & 3) a ratcheting mechanism on the hydraulic cylinder messes up.
If you "just drive it", every time you start the car you can be causing excessive wear on the plastic guides in two ways. 1) plastic is shaved off of the guide making fine hairs that work their way down to clog the oil pick up tube and 2) plastic and metal chunks can be broken off that make their way down to clog the oil pick up tube.
Do what you want. I would listen real hard at starting with the hood raised and maybe an automotive stethoscope to pin down where the ticking is coming from.