Most likely is knocking. Try next higher octane grade of gasoline.
The cool water hitting your piping hot exhaust makes the metal contract (Shrink) and it makes a ticking noise.
The fuel injectors make the ticking noise you hear at startup, especially when the engine is cold (colder temperatures).
Collapsed hydraulic valve lifter? Rocker arm (valves) need adjusting?
can you elaborate? engine noise? stationary/moving? ticking, tapping or a definite knocking?
A gasket leaking will cause this noise. Did you torque to the right specs and in the right sequence then retorque after 3 heat cycles.
the ticking noise is a small exhaust leak close to the exhaust headers or exhaust pipe near the engine.
lifters
if ticking noise is in engine, u most likely have a worn hydraulic lifter. check oil for correct volume and viscocity
I had a similar problem in a taurus. I had to replace the alternator.
from which part of your engine is the ticking noise coming from. if is the TOP it would most likely be lifter noise.try using a thicker oil.
Try to locate the ticking noise. Is it the engine? Is it ticking when you are driving? When you are sitting still? It could be as simple as a stone stuck in yoru tire, everytime it hits the road it ticks. it could be a lifter in the engine. Try to be more specific as to where and when the ticking happens.
SEAT BELT