I've had my e36 w/ an m50 engine since November and I absolutely love it. However, recently, I've noticed when driving off a cold start, there is a sporadic "tea kettle," noise that will rise up. I did some research and from what I can gather, the noise could possibly be the throttle body, a pulley, or a belt of some sort. I changed my oil DIY style and I'd like to think that I can solve this annoyance in the same manner. Any suggestions?:dunno: