Strange rattling noise and rpm issues

Guizá

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Mar 12, 2010
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California
This just started happening a couple of weeks ago out of the blue. It seems to just do it when I come to a complete stop, say at a red light. It last for about 5 seconds. As far as other issues go, nothing else seems to be affected.

Here's a video. Watch/listen closely how my rpms seem stuck low while the rattling occurs. But as the rattling stops, my rpms shoot back to normal idling.



th_IMG_0165_zps68503d1f.gif
 

Expurple

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Jan 4, 2012
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369
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Ankara, Turkey
Either it's a lifter problem or header gasket leak.
A simple diagnosis would be going under the car and check for black marks on the header-gasket area.
 

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