04 sounds like blow off valve

[threedogs]

Hi all not overly concerned but lately I've Been able to hear the turbo a bit louder. at first thought noise was coming through the radio. Read another member had a similar problem and they said leaking intercooler. Now I get a sound like I have a blow off valve fitted, and constant cold/hot its the same. Gee I hate these computer cars. any ideas would help

[nissannewby]

It does sound like a boost leak. Also check your intake into the turbo make sure it hasn't been dislodged.

[threedogs]

Thanks mate I'll take the cover off tomorrow and check everything, boost is set to 14psi and it goes great.
just that very annoying sound,

[Yendor]

Also have a look around the EGR valve and pipe for leaks.

If you have a major boost leak you should be able to pick this up by your boost gauge.

[threedogs]

Boost seems normal but after I remove the cover I'll run a spanner over everything thanks mate. everything mentioned is all I have touched with NADS etc

[threedogs]

Rightio, removed engine cover, looked normal. checked hoses all were ok, checked egr {blocked} all tight.
other than trying a bigger hammer I'm at a loss.
One thing I did notice was at 2000rpm normally I have 10LB psi. now its 5LB psi. losing pressure as suggested.
so taking it the IC is knackered as everything else looks ok. Thoughts please,
gee I hate these things.

[Yendor]

That drop seems very high to be caused by a leaking IC.

Did you check that all the hoses are still on the flanges correctly?

[threedogs]

Yeah They look good other than R and R I just nipped clamps, will check again Thanks Yendor

Split hose maybe but appear in good nick.?

[Yendor]

Possible, My IC was leaking for over 2 years before I replaced it and it and I never had a drop in boost like that.

It would have to be a fare size hole.

When a hose on mine partly dislodged on the IC flange, boost was about halved.

You may also need to start looking at the turbo.

[threedogs]

Don't say that as I'll sell it. Got no $$$$ for a turbo fix