irritating buzzing noise from back of the engine bay GTC!

[superfly]

Dear PPers,

any help on the following would be much appreciated, before i take this GTC to a dealer and have to sell off my first born. Ive recently been experiencing a tapping/buzzing noise, quite loud from right at the back of the engine bay, sounding like its coming from the drivers side. Its intermittent, and first arose a few months ago, stayed for a couple of weeks before disappearing for a few months and now reappearing.

Because its intermittent, it obviously disappeared when i last had it serviced a few weeks ago, and the HR Owen mentioned they couldnt find a fault.

The noise continues sometimes when the engine is off as well for a few seconds before stopping.

Any clues at all would be very much appreciated!!

[stain]

There's a load of little air pipes at the back of the engine and they often split. Happened on ours recently.

[superfly]

Thanks very much. Sounds much less ominous than I feared. Out of interest, what were the symptoms in your case?

[enjoythemusic]

superfly said:

Sounds much less ominous than I feared.

If it is the common manufacturing / design defect that causes false air, plan on an engine-out fix. Many, many Bentley GT / GTC cars suffer this problem over their lifetime. Mine went at only 28k miles and the cost was around $4k USD to sort out.

[Corbeliere]

Cost me £3,450 at a main dealer. Ouch!
An Indie would be much cheaper.

[superfly]

Wow. What exactly did you get done?

[morgrp]

might be the brake vacuum pump bleeding off - lots of cars do it and I doubt its anything to worry about - has the car got a stop/start system by any chance?

[Corbeliere]

superfly said:

Wow. What exactly did you get done?

The vacuum pipes on top of the gearbox are prone to splitting. It requires an engine/gearbox out to fix the problem. Getting them out requires the front suspension to be dropped as well. It's a big job. Definitely not one for the DIY man.

Les.

[JamieBeeston]

Corbeliere said:

Cost me £3,450 at a main dealer. Ouch!
An Indie would be much cheaper.

Was it not covered under warranty? or are you out of warranty?

[Corbeliere]

Out of warranty. Had to rely on the bank of me unfortunately.
Luckily the replacement part is supposed to be an upgraded item so perhaps mine won't go again.

[JamieBeeston]

Just having this replaced on warranty on mine.

"Vacuum pipe behind steering rack split. Req engine removal."

Was making a grring/grinding/whirring noise

They came and collected it, confirmed it was the above and said they needed it for a week to sort as its 16+ hours of engineer time.