well, my car has been running pretty well ever since i bought it. I kinda shortened its life by putting on so many miles but mostly highway. Anyways, i have 135k (I had 130k about 3 weeks ago lol) and just recently i've been hearing this whurrrrrrrring noise coming from what sounds like the timing chain case. It sounds like it is coming from the upper corner closes to the front (where the SC would be mounted). Anyways, I don't know what this sound is and it is parallel to the rpm speed of the engine. Any clue?

 

the tensioner?