[thstone]

Its not uncommon to hear the timing chain and tensioners rattle at startup, especially when cold. With the weather cooling off, you might be hearing this again for the first time in many months.

This will typically sound like chains rattling around for 1-2 seconds until the oil pressure comes up and then it will quiet down. You also might get a short bit of white smoke out the tailpipe. Usually happens on the first start of the day but it can vary.

Generally, this is nothnig to worry abgout. If its more than this, let us know some more details.