Help name that sound.....

[kbayashi]

Hi everyone,

A few months ago, I got this weird sound as I was taking off in first gear. It went away for a few days and now it just happens randomly. I haven't quite narrowed down what specifically causes the noise. From what I can tell so far, it only happens when I'm letting out the clutch in first gear or reverse. And it only happens from a stop, never while I'm changing gears into 2nd, 3rd, 4 th, or 5th. Since I've noticed the sound, it's randomly happened about eight times. I don't notice any performance issues when the sound happens. Nor do I feel any odd vibrations when it happens. I'm assuming I have the original clutch, I bought the car with 50,000 miles and haven't changed yet. The only way I know how to describe the sound is that it sounds like someone flipped the switch on a hydraulic pump for a second or two as I'm letting the clutch out. It's loud enough to hear with the top up, windows closed and radio moderately on. And it's a strange enough sound for my girlfriend to say "what was that?" Any suggestions would be appreciated.

Thanks in advance for anyones help.

Kevin

Stock 98 5 speed Boxster with 75,000 miles