C8 Vacuum Hose

[Rp0thejester]

Hi Marc, this could be tricky, but can I have a diagram of all the vacuum hoses/systems in the engine bay please.

[GiveMeABreak]

Designation

" a" Yellow colour identification on the rubber pipe supplying the inlet air heater meter.

Flow Chart

(1) vacuum pump.
(2) Brake servo (ISOVAC).
(3) Butterfly housing control proportional electrovalve.
(4) Butterfly housing meter.
(5) Inlet air heater control proportional electrovalve.
(6) Inlet air metering device-heater.
(7) Vacuum reservoir.
(8) Turbocharger capsule valve proportional electrovalve.
(9) Turbocharger capsule valve.
(10) "Swirl" control electrovalve.
(11) "Swirl" diaphragm.
(12) EGR valve vacuum proportional electrovalve.
(13) EGR valve.
(14) Vacuum pipe linking the "Swirl" electrovalve to the "Swirl" diaphragm.

Connections of the unions on the electrovalves ( 3), (5), (8) and (10):

• "b" Control proportional electrovalve
• "c" Colour reference on the electrovalve
• "e" Electrovalve outlet pipe with colour reference (at "d")
• "f" Electrovalve inlet pipe

Colour references

Reference	Designation	Electrical connector	"c" "d"	"f"
(3)	Butterfly housing control proportional electrovalve	Black	White	Without
(5)	Inlet air heater control proportional electrovalve	Blue	White	Without
(8)	Turbocharger capsule valve proportional electrovalve	Grey	White	Without
(10)	"Swirl" control proportional electrovalve	Blue	White	Without

N.B.: The pipe ( e) should be connected facing the colour reference "c" on the electrovalve "b".

Connection of the unions on the electrovalve ( 10):

• "f" Electrovalve inlet pipe
• "g" Colour reference on the "Swirl" electrovalve
• (14) Vacuum pipe linking the "Swirl" electrovalve (10) to the "Swirl" diaphragm (11)

Colour References

Reference	Designation	Electrical connector	"g"	(14)	"f"
(10)	"Swirl" control electrovalve	Black	White	Without	Without

N.B.: The pipe ( 14) should be connected facing the colour reference "g" on the electrovalve (10).

[Rp0thejester]

How's the hoses diagram looking?

[GiveMeABreak]

You'll have to be more specific - this is a 'Diagram' of the vacuum system as you requested Ryan.

What exactly do you want if not this? EGR Piping, Turbo Piping, Brake Servo???

[Rp0thejester]

Every vacuum pipe going please, I'm thinking turbo pipes first. I think I have a major leak somewhere. I'd rather find it by hand rather than opening a blow torch propane tank to find the leak, I like my eyebrows

[GiveMeABreak]

Air Distribution Chamber	Turbo Air Piping
EGR Circuit	Intake Manifold Air Distributor
Oil Decanting / Breathers	Brake Servo

Brake Vacuum Pump

[Rp0thejester]

Thank you. That info is invaluable to me, once again you've came up with the goods!!! Honestly, your a legend