I've got a couple noises in my engine that seem abnormal. Perhaps one of you guys with some awesome noise deciphering skills can give me a clue to what's happening here.

The first concern is the Darth Vader syndrome;
http://www.youtube.com/watch?v=RcDTZcLcMnU&feature=channel_page

The main reason I'm concerned is that there was a BIG "exhale" from there after shutoff when the engine was very warm.

Next, is the knock (can also be heard in the Darth Vader);
http://www.youtube.com/watch?v=5xlZgQrSnQk&feature=channel_page

The knock in the video sounds most accurate to reality at the 35 second mark. This knock ONLY happens after the engine is warm, and the car has been driven fast. When cruising around in the neighborhood after startup, this does not occur.

Lastly, there's a rattle... maybe the turbo? Didn't translate well to video;
http://www.youtube.com/watch?v=VbU8KuS6cn0&feature=channel_page


Injector service is high on the priority list. I think that should help with some of the noise you're hearing.... Anyone else hear something more serious happening? Let me know! I'll be selling the old beast soon and would like to make sure she's in tip top running condition.

Thank you!

__________________
'90 300SE --- 173k miles --- (Odometer just stopped working!)

'85 Cali 300D --- 193500 miles --- (Second one) Sold Nov '10

'82 300TDT --- 236,xxx miles --- (My first one) Sold July '09