Porsche Boxster 986 engine strange noise
 

I am from Slovakia , I do not speak English well . You know someone help me ?
<iframe width="560" height="315" src="https://www.youtube.com/embed/d5bFl_GgpK4" frameborder="0" allowfullscreen></iframe>

I changed things marked on the photo. The sound is still not changed , it is the same .
http://986forum.com/forums/uploads02...1472508806.jpg

From as many starting , I discharged battery . At the start I can fix it the same sound (in 00:15).
<iframe width="560" height="315" src="https://www.youtube.com/embed/y-N87TWL-kM" frameborder="0" allowfullscreen></iframe>

You might try removing the belt to see if the noise goes away with belt removed. It's ok to run a few minutes with no belt. However from that last video with the battery discharged, I would check the spark plugs. A loose plug can make a chirp like that.

I had the same sound and 911 monty is correct it was a loose plug that had not been tightened correctly.

Thank you boys, I will do it. I will work with car at weekend and than I will tell you how it worked.

Just an FYI. New plug torque is 30nm/22ft lbs. Used plugs retorque to 25nm/19 ft lbs. Cold.

OH and Welcome!

Thank you guys very much , it was a loose spark plug. Sound stopped , everything is fine ! you are awesome

"ragged candle" = loose spark plug ? Sorry my Slovkian is bad :-)
Pleased it is fixed for you !

Sorry, yes I fixed it. It wos loose spark plug. Google translate is bad :D

I kinda liked the "ragged candle" translation, had a chuckle over that one! Well worth the price of admission. Enjoy! :)