Weird sound 3-4 rpm
 

Hi all !
I have a problem with my rx
btw this isn't my vid.

I don't have idea what can it be. Did u ever had something like it ? It's on cold and hot engine and with clutch on and off.

Thanks all for help !

Loose pulley or bad pulley bearing?

Try to pinpoint it with a mechanic's stethoscope or piece of tubing to your ear.

I try this and it's sound like came from oil pawn but U can't be 100% sure for this

Stupid question, don't get offended;
Did you check the oil?

Hehe yes I have oil in engine at max level, and I change it after about 2000 miles, compression in engine is 7 and I have sohn adapter

That does not sound like a pulley to me, more like metal to metal, possibly exhaust rattling from loose bolts. Did you removed/reinstall something recently? cross member, suspension parts, oil pan cover? Exhaust shield will be more like a tin sound, pulleys/bearings tend to have a chirping sound to them, this is definitely more like a solid/thick piece of metal.

My engine was rebiuld about 40000km ago, sound is coming from oil pawn maybe its really hard to say. Before rebuild I have sound like this but in all rpm from 1 to 9k and then it was pawn on shaft second rotor but it was more metallic and loud. I check bolts and they look ok. Will change oil next week will se if there some metal parts in oil.

Update:

I change my clutch and ignition. Sound comes from near by exhaust system do u have any idea? Car run normal at hot or cold engine only this sound...