Canister purge electrovalve - C4 VTS

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Cutac
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Canister purge electrovalve - C4 VTS

Post by Cutac »

Hello

Does anybody know where the canister purge electrovalve(1502 H8) is located? I would like to replace mine but can't find a guide on ServiceBox and the scheme is not very helpful.
Car is C4 VTS 180.

Thanks :)

wheeler
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Re: Canister purge electrovalve - C4 VTS

Post by wheeler »

Follow pipe number 6 which should lead you to the electrovalve (number3). Cant remember off hand exactly where its located but they are sometimes hidden in the inner wing next to the charcoal cannister.
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electrovalve.jpg

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Cutac
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Re: Canister purge electrovalve - C4 VTS

Post by Cutac »

Thanks.
It seems it's positioned somewhere around intake manifold, but we'll see today.
How to tell if canister is faulty?
I know valve is since I've been getting petrol smell in the cabin under hard braking and the valve's been clicking for some time now.

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Cutac
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Re: Canister purge electrovalve - C4 VTS

Post by Cutac »

Can't find it and can't find any pipes going between the engine and the right wing.

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GiveMeABreak
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Re: Canister purge electrovalve - C4 VTS

Post by GiveMeABreak »

A bit of info about its function and operating conditions:

Function: Fuel vapour recycling (canister)
Engine stopped: The electrovalve is closed, the canister absorbs the fuel vapours coming from the tank.
The electrovalve, controlled by the engine ECU, permits the recycling of the petrol vapours held in the canister.

Recycling of petrol vapour is authorised in the following conditions:
  • Coolant temperature above 60°C
  • Air temperature higher than 5°C
The quantity of petrol stored in the canister is determined by the ECU.
As soon as the canister has to be purged, the engine ECU temporarily causes the engine to be running at an even mixture.

Have a look near the inlet manifold and throttle butterfly as in the diagram:
Cutac Cannister.PNG
You could have assembly 'A' or 'B':
"A" assembly: Fuel tank unit module with separate fuel filter.
"B" assembly: Fuel gauge/pump module with integrated fuel filter.
(1) Fuel pressure regulator.
(2) Throttle butterfly housing .
(3) inlet manifold.
(4) canister discharge electrovalve.
(5) Canister reservoir (active carbon filter).
(6) Petrol breather blow-by pipe system.
(7) Fuel tank.
(8) Fuel pump and gauge assembly (submerged in the fuel tank).
(9) Fuel supply pipe.
(10) Fuel return to tank hose.
(11) Fuel filter .
(12) Petrol injectors.
(13) Petrol injector supply rail.
(14) Valve SCHRADER (according to model).
(15) Fuel gauge/pump module with integrated fuel filter.
(16) Fuel filter .
(17) Fuel pressure regulator.
Special features:
Injection rail without petrol pressure regulator
Fuel pressure regulator incorporated into the sender unit
Injection rail without fuel return

wheeler
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Re: Canister purge electrovalve - C4 VTS

Post by wheeler »

Cutac wrote:
01 May 2019, 11:07
Thanks.
It seems it's positioned somewhere around intake manifold, but we'll see today.
How to tell if canister is faulty?
I know valve is since I've been getting petrol smell in the cabin under hard braking and the valve's been clicking for some time now.

The valve is meant to click, on some models they can actually be quite loud, especially at idle. i’ve even seen some people wrap them in sponge to try & muffle them.
As far as the canisters go, cant think that ive ever had to replace one for anything but accident damage.

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Cutac
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Re: Canister purge electrovalve - C4 VTS

Post by Cutac »

It's been audible at idle, for the last two winters, it hadn't been audible before so I assume it's not in the best order. And since the car hadn't been damaged, I guess petrol smell should be accounted to that valve because no leaks were found anywhere.

GiveMeABreak, thanks for a detailed info :)
I'll give it another look today, hope I'll find it. It has to be somewhere because it's clicking :mrgreen:

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Fake Concern
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Re: Canister purge electrovalve - C4 VTS

Post by Fake Concern »

It's under the front wing drivers side on a RHD car. You can check it working on Diagbox.

http://c4owners.org/plugins/forum/forum ... ost_115479

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Cutac
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Re: Canister purge electrovalve - C4 VTS

Post by Cutac »

That's the canister, but I'm looking for the valve.