When I start the car the motor sounds really rough, Like it's not lubricated at all and fixes itself almost immediately after couple turnovers, if i turn the car off, and start it, its fine, but if It sits for an hour or so and start it again, the problem comes back.

The dealership did a full engine diagnostic and found a spark plug mis firing due to leaking valve gaskets and replaced them and said it fixed the problem, but its still here, the technician says its a normal sound in larger engines. that the newer s4's sound more like a desil engine when they start.

But this doesn't sound like that, I just feel like something is wrong. no checklights are on, the car runs and drivers great.

I read another post with similar problems, and he said it was his fuel pump.

any suggestions>

 

heres some video of what it sounds like