Weird Sound From My R33

[zorb_rules]

OKay before you guys start on the BOV jokes lol theres a really weird noise coming from my r33 upon start up thats got me a lil worried.

Anyways to fill you in I took the car on a lil bit of a drive the other night through the dandedongs and what not and well essentially gave her a decent work out..

Anyways only since then I've heard what appears to be the sound of air escaping (loud like trucks air brakes loud) upon starting the car and beginning to drive this usually happens when the car has just started in motion, and has occured whilst driving or in reverse..the noise only happens the once and if I turn the car off and on it won't do it.. I guess it only really occurs after its been sitting for a while.. Does anyone have any ideas??

To me it sounds like some sort of pressure release but for the life of me I have no idea why...THANKS in advance.

[cheez]

uve probably blown a cooler pipe join. it might be split or partially off the pipe. check all your intercooler pipes and all the joiners too.

[Krimz]

Iv come accross that also, i notice a loud hissing when i pull into garage afta goin for a spin, i checked all my vaccum lines n everythn cudnt hear or feel any air escaping. I rekon its my fan or something around that area? Are you boosting ok n does it idle normaly?

[zorb_rules]

Boost fine and idle hasnt change.. it doesnt do it under load and only does it like the once on start up today I left it to idle for 15minutes before I took it for a drive and it only made the noise as I reversed from the driveway..

[adznight]

Take it to a mechanic if you're worried

[zorb_rules]

I would but its a kind of hard thing to explain when the car only does it sometimes on start up.. and I dont even know where the sound comes from if you get what I mean... Thats why I thought I'd ask on here first incase and of you guys had experienced a similar problem..

[KURAUN]

sounds like wat my bros 34 GT did

only on startup it would make some kind of hissing noise for a few seconds then that was it

he changed the oil, which by the looks of it had never been changed by the previous owner

and its was all fine hasnt made it since.

[adznight]

Record the sound and post it!

[Krimz]

Record the sound and post it!

Haha theres a gud idea

[zorb_rules]

thanks guys ill try kinda hard when it only does it occasionally but ill try.. it literally sound like airbrakes going off on a truck (that kinda high pitched hiss) and happens from the front of the vehicle.. it hasnt done it yet today..but probably will tonight its really weird lol theres no like pressure release system built in anywhere ive never heard of is there??

im not sure too but since the car was sitting ideling this morning i've kinda been thinking it might be coming from the steering somewhere...since it didnt happen on idle.. maybe it when i turn the wheel for the first time??