My 07 V8 SRX now has 4200 miles. I have a engine start-up noise that I don't know if it is normal. The sound occurs only at start-up - and only if the car has been turned off for several minutes. Cold starts are worse (longer duration of noise) - but it still happens with a warm engine as well. It does not sound like piston slap or rod knock. The sound is totally gone within 3 to 5 seconds of engine start. No performance issues either. It almost sounds like a old Chevy engine with shot hydraulic lifters. It is as if the oil has totally bled out of the hydraulic lifters - but as soon as pressure is up - all is good. (I assume this engine does not have lifters?) Any Northstar techs out there with advice? I did take it to the dealer just to document the issue, but can't take it to the dealer for a few weeks (unless something is truely broken) I love this thing - and hate to have it in the shop if this is "normal" for a northstar engine. Maybe this relates to the VVT operation? I also can't say the noise is new as I almost always have the radio on (louder than it should be :tisk. Now I am sensitive to the noise so I turn everything off before I crank.