IT SOUNDS LIKE ITS THE LIFTERS - ONCE THEY ARE LUBED BY THE CIRCULATING OIL IT GOES AWAY. IF ITS YOUR CHAIN MAKING THE NOISE THEN IT WON'T GO AWAY.

WHEN MY CAR IS COLD & TURN ON THE CLIMATE CONTROL RIGHT AWAY, I HEAR WHAT SEEMS LIKE WATER INSIDE THE VENTS.
ANY IDEA WHAT THAT IS?

TONY