nissan wingroad 06 noise on start up

[wingroad06]

Hi

Can someone please help? My nissan wingroad 2006 1.8L CVT car makes a bad noise on start up from cold. The noise lasts about 30 seconds then goes away. The noise sounds like metal scraping?? The car has a very recent oil and filter change.

I have been told it maybe the alternator pulley? Or possibly the transmission?

Any ideas?

thanks

[abbow]

your main pulley as well..can be the fault