Vacuum Hose Diagram

Following on from my problem the other week when my injector pump died and was replaced by a garage who managed to lose most of my undertray screws/bolts.

Since the injector pump was changed my car has a very loud whooshing/whistling noise when the turbo kicks in - wasn't like that before the garage did the work. I was going to buy the DPH set anyway so thought maybe this is a good time to do it. Fitted all the new hoses - old ones looked solid despite being very oily. All fitted correctly but noise is still there.

I'm certain it's a vacuum hose split or come loose but unsure of the routing of the hoses. Does anyone have a diagram where they go?

My car (TD4 2005) has done 101k miles, EGR bypass fitted for over a year, no loss of power, no smoke. Just much louder than it used to be.

Cheers all

Dave

my car has a very loud whooshing/whistling noise when the turbo kicks in

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that's almost got to be pressurised air escaping from the post turbo system ..
hoses / intercooler / manifold ..

or maybe from air being sucked in somewhere pre-turbo ..
i.e. apart from the air-filter opening ..
e.g. if the cover hadn't been re-fitted corectly ..
or the maf sensor wasn't sealed in place properly

I'm certain it's a vacuum hose split or come loose

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would not that effect the brakes vacuum servo ??
i.e. would not the brakes 'feel' different ?
( just speculating )

yes brakes are not as sharp as before. Also since I did the EGR bypass Ive always had the buzzing duck noise (mentioned on this forum a few times) That noise has never bothered me, but since the garage had my car the buzzing duck noise has been greatly reduced to a very faint sound making me think vacuum pressure has been reduced.

Have already checked air filter when I fitted new DPH set all fitted ok.

Pouring with rain outside right now so cant really work on the the car - just trying to get some advice.

Thanks all

Does anyone have a diagram where they go?

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might be Similar to this : 'Layout of vacuum hoses ( bmw ) M47'
BMW TIS - 11 74 ... Layout of vacuum hoses (M47 / M57TU)

in that the Vacuum tank looks the same
( i've no idea what the pressure converters are on that )
there will be something connecting the vacuum pump to the v.tank ( i'm assuming )
from the tank .. there will be branches out to
egr unit / solenoid
brake servo
turbo vanes unit / solenoid
( i think that's all .. can't think of anything else right this moment .. might be wrong )
( googling didn't display any diagrams except that one .. on initial search)
no doubt it might be a right job finding the leak ..

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Also since I did the EGR bypass Ive always had the buzzing duck noise (mentioned on this forum a few times) That noise has never bothered me, but since the garage had my car the buzzing duck noise has been greatly reduced to a very faint sound making me think vacuum pressure has been reduced.

Click to expand...

score 1 for the 'duck' .. as an indicator of vacuum system health .. or lack of

best of luck tracing the fault ..

Ive been looking around my engine bay today looking for air leaks and the only one Ive found so far is from a round hole on the right hand side of my air filter box - circled in yellow on the picture.

Is this meant to have something pluged in to stop air blowing out?

cheers all.

On mine, that hole has a hose clamp clipped in to hold the rubber hose just below your yellow circle ( block it with gaffer tape )