you may have a bent valve
== == Could be a pebble stuck in the tread of one of your tires.The ticking noise only appears to disappear because the tone or pitch of the noise gets higher with speed to the point at which it is undetectable to the human ear.
A nick, crack or tear in a belt will make a tick soung as well as a water pump that is going bad.
The ticking noise is the metal cooling.
The fuel injectors make the ticking noise you hear at startup, especially when the engine is cold (colder temperatures).
If your vehicle has a timing belt and not a chain, you need to replace it immediately. My distributor made the same ticking noise and it turned out to be the timing belt had a frayed piece on it and this piece was the source of the noise. Before I could figure it out, the belt broke and left me stranded on the roadside.
there is a rattling noise in the area of the serpentine bell
I had a similar problem in a taurus. I had to replace the alternator.
If you are loading a Cd-rom,or a program.
well it sounds like your lifters are ticking The connecting rods screaming LET ME OUT!!!
horses make neighing sounds
The cool water hitting your piping hot exhaust makes the metal contract (Shrink) and it makes a ticking noise.
"Engine temp is low 140 degrees" Bad Thermostat (stuck open) "a ticking noise is coming from the upper part of the engine" Lifters Make a ticking noise, To stop that there are these bags that fill with oil. If you run low on oil the bags don't inflate at you get a clicking. Check you oil level!!! The bags could be bad, the oil supply could be clogged, or something else could be wrong.