R C Nesbit wrote:
> Catman spoke:
>> Probably neither. Sounds like a possible air leak. Had a listen under
>> the bonnet?
>
> Yes, but under no load the noise only comes in at high revs, so is
> competing with the engine noise.

Perhaps it's coming from the cabin?
>
> It is like turning a switch, at whatever road speed, or any gear, at
> 30, 50, 80mph, light throttle is OK, heavy throttle has heads turning
> wondering WTF is that?
>
>> Also, try turning the aircon *right* off.
>
> <g> yes, and I did do that - no difference.
>
> It does sound like an air leak though. I shall try to investigate
> further over the weekend.

I shall check regularly.


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