After replacing a timing belt have impression that engine is a bit louder during worm up. About one minute after start when rpm drops below 1000 I can hear taping noise from the front of the engine right behind radiator. When I start driving and engine reaches operating temperature that noise is gone or almost hard to hear. Is that something to be concerned?

 

Its 21 years old with low milage , do you change oil yearly , that would be 21 oil changes so far and what oil do you use ? If in a cold place the 5w30 , good fully synthetic , sounds like some partial oil blockage , change the oil and filter

 

I am a second owner and car was previously owned by retirees who were driving 2-3K a year. Maintenance was done by local dealer and have records, including oil changes. I am using 5W30 synthetic and just had oil change, including filter. Here is how it sounds.