I got my car a couple of mods in this last days and now my car is making a strange sound

what could it be ???????????

ill be posting a video in you tube it will be avaivable soon today here is the address
http://www.youtube.com/user/Boster000

Please clearly describe what mods and what sound and what conditions you hear it under.

Sounds like one of your pullies is pooched but yes you need to specify what work was done.

when i started the car there was no noise it was very smoth and after about 40 seconds the the noise started to come in i dont know how to explain how is the sound but it can be clearly heard in the video on my youtube page the link is posted in my first comment


pd; the mods i did are listed in my signature

Remove your belt and run it for another minute. Not longer, as your water pump won't be spinning. If the sound goes away, start spinning pulleys until you find the culprit.

i think it may be coming from the crank pulley this means i have to replce it ???? how much will it cost were can i get it??

Check the idler....

while investigating the source of this strabge sound we found out that when we take the oil fill cap the is an extreme vaccum sounds something like a powerfull vaccum cleaner then we also discovered that when the strange sound came in and we thake the oil dip stick out the sound goes away what could be causing this

The sound from the video clip sounds like an idler pulley, did you remove the belt to isolate the noise yet?

The vacum sound could be normal as there is a good pull at idle, try reving the engine a little while in park, does it stop?

yes when i rvw up the engine the sound goes away but it also goes away if i thake out the oil dip stick