Perhaps my fellow TDV8 custodians can help me here?

Recently I’ve noticed a hissing sound that starts at about 2,000 RPM and anything more than just very gentle acceleration. With the front windows open it is very obvious.

The sound stops if I lift off.

Is this normal or likely to be a turbo problem developing?

Already checked the two big hoses from the intercooler to the intake manifold and the two small ‘elbow’ hoses under the acoustic cover and there are no visible splits.

Believe there are four further hoses underneath the engine (turbo inlet and outlets): unsure how to access these but will have a look at the weekend.

Am I on the right track? Any tips on accessing/changing the four hoses underneath?

Am trying not to think about failing turbo bearings

And this is the thanks I receive for lavishing all that attention on the ungrateful  2008 MY Java Black TDV8 HSE

Hope it isn't this one:

Id 44148
Models
LS - Range Rover Sport
Title Range Rover Sport 3.6 TDV8 Exhaust Manifold
Last Modified 22-APR-2010 14:32
Category Engine
Symptom 497000 Engine Noise
Content
Issue:
The customer may complain of a whistling/blowing
noise from the engine compartment which maybe
more prominent during cold start up and, or whilst
accelerating.
Cause:
Exhaust manifold distortion.
Action:
If the above stated concern is verified please raise
an EPQR specifying the crack off torque value of the
exhaust manifold nuts. Please also retain the old
exhaust manifolds/gaskets/studs and nuts as they
maybe required for engineering investigation
purposes.
Replacement of the exhaust manifold(s) on Range
Rover Sport requires body removal. Land Rover
therefore recommend that if the above stated cause
is verified on one bank, both exhaust manifolds
should be replaced to avoid the possibility of a repeat
concern.
Parts Information
Manifold Exhaust RH – LR005685
Manifold Exhaust LH – LR005686
Exhaust Manifold Studs – 1357627
Exhaust Manifold Nuts – LR004057
Exhaust Manifold Gaskets – 1420910
Repair Operation Time
30.15.13 – Manifolds – exhaust – set – renew –
9.9hrs
For repair procedure guidance please refer to GTR
Section 303-01D - Engine - 3.6L - TDV8

The above bulletin refers to a whistle under load. Usually just before 2000RPM

The rear stud on the exhaust manifold (either side) breaks due to a warped exhaust manifold

^^^ Oh great

Thanks for the replies guys.

If it's the exhaust manifold I suppose that is better than turbo failure. (In the same way that a diagnosis of syphilis is preferable to herpes).

There's no hissing on revving up in neutral but ....... 2008 MY Java Black TDV8 HSE

That sounds like an air leak some where in the system. fairy liquid called for

Firstly, I would have the 2 top turbo hoses off, and check them fully. Wouldn't be the first time someone has missed a split hose

Disco_Mikey wrote:

Firstly, I would have the 2 top turbo hoses off, and check them fully. Wouldn't be the first time someone has missed a split hose

OK had the top hoses completely off and found no splits. Started her up in off road height and had a good listen under the bonnet and stuck my head in the wheel arches and could only hear 'normal' noises. Revving up to about 2000 with the driver's door open can hear just a very faint whistle. Test driving noise does not sound so loud unless in between buildings or alongside a wall. Perhaps I'm worrying too much and just suffering from TDV8 Simple 1 saga induced paranoia? 2008 MY Java Black TDV8 HSE