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.
SEAT BELT
Most likely is knocking. Try next higher octane grade of gasoline.
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.
The cool water hitting your piping hot exhaust makes the metal contract (Shrink) and it makes a ticking noise.
Faulty engine
98 Chevy new 383 block 30k, ticking noise from sounds like heads . 210k on heads;
The check engine light is not related to the oil or the transmission fluid systems. It is related to fuel control, computer, emmissions control systems. The faint ticking you hear may just be the normal noise coming from the fuel injectors. All fuel injectors make some kind of ticking noise while they operate. I would say, if the check engine light has anything to do with the services performed, it would almost have to be a simple connector that may have been unplugged to move a wire out of the way, and then forgotten. Otherwise, I believe it would have to be a coincidence. Even if the ticking noise is a lifter in te engine, that still would not cause a check engine, and would not be the fault of someone changing the oil, as long as the oil is full.
CV Joints? Rocks in the tire tread?
relay