Clickety click?

[nikos]

Hi guys n gals

When I do a cold start, I get a clickety-clickety kinda noise coming from the motor. After about 30-60 seconds it fades away. When still cold, and I rev the motor, the noise disappears and then occurs again when the revs reach idle level, but only for a couple of seconds usually.

I was guessing maybe an idle bearing as the noise ceases when revved? Or if not that, the time before enough oil reaches the top of the motor?

Although the other day I walked past an el as it started up, and I think I heard the same noise. Is it common? Or serious?

Thanks in advance