Join Date: Sep 2011
Thanked 258 Times in 197 Posts
Usually valves that are out of adjustment make a "ticking" noise, not so much a "rattling" noise.
How long does it run before it stops making the noise?
Any idea what oil they put in it?
If it was mine, and I wanted to know everything was OK, I'd drain the oil (looking for any metal chips) and check that the the filter was in correctly (I'd reuse it), then fill with Rotella T5 10W-30 blend.
I'd probably also check the valves.
If both checked out fine, I wouldn't worry about it.