New Sienna LE engine noise

[ouyangcui]

I bought a brand new Sienna LE V6 FWD recently. I found there is metallic tapping, knocking engine noise from the hood when I drive (fully warmed up). Also feel this engine runs not smoothly. The noise gets louder during uphill or acceleration. The current milleage on my Sienna is 1,200 miles. Here is the video sound I took by iPHONE.
"http://www.youtube.com/watch?v=lBI1ONtofjg"
I just wondering is this sound normal or I have to bring it back to dealer soon?

[ACS Rob]

i have an SE but i think it's the same 3.5L engine in all the V6's? your engine doesn't sound normal at all. mine is generally quiet and just hums on idle. sounds like your low on oil or valves need adjusting? hope you get this resolved.

did it sound the same during your test drive?

[skinny2]

I would have to hear it from the cabin, but anytime you're that close to the engine you'll hear a lot of internal noise. Sounds like typical Toyota engine to me...which is NOT smooth or quiet. From the cabin it's not what I would call overly loud but it's not an attractive sounding engine regardless. Once you hit the VVTi it starts to sound pretty good though.

[proprioceptive]

That thing sounds like a freakin' diesel... get that checked out ASAP.

[Biggoldfish]

Bring it in!!!!!