Evaporative Emissions (03.13); Description; System Operation; Maintenance - Aston Martin V8 Vantage Workshop Manual

Engine (03.00)

Evaporative Emissions (03.13)

Description

The evaporative loss system prevents escape of fuel vapours
into the atmosphere.
Fuel vapour is displaced from the fuel tank during filling.
Vapour is also displaced due to fuel evaporation in higher
temperatures. Displaced fuel vapour is absorbed in the
carbon canister filter located on top of the fuel tank.
During normal engine running, absorbed fuel vapour is
purged from the carbon canisters and mixed with the normal
fuel/air charge in the inlet manifold.
October 2005

System Operation

Displaced fuel vapour leaves the fuel tank via the normally
open fill level vent valve and the roll over valves. It passes
through the carbon canister where fuel hydrocarbons are
absorbed. Clean air leaves the system via the normally open
canister vent valve. This valve is only closed during
diagnostic pressure testing of the fuel system.
During normal engine running, the single vapour
management valve in the engine bay is periodically opened
allowing fresh air flow into the open canister vent valve,
through the carbon canister, through the vapour
management valve and into the primary inlet manifold. This
fresh air flow progressively purges any absorbed fuel vapour
from the carbon canister.

Maintenance

Fuel Vapour Valve Assembly-Renew

Repair Operation Time (ROT)
Item
Fuel Vapour Valve Assembly-Renew
Removal
1. Remove washer reservoir securing screws (x) and tie
aside for access.
2. Remove bolts (x 2) bracket to body.
3. Disconnect multiplug (x1).
4. Manoeuvre valve and bracket sideways for access.
5. Unclip valve from bracket (leave bracket in vehicle).
6. Disconnect pipes (x2) form valve (quickfits).
Installation
1. Disconnect pipes (x2) from valve (quickfits).
2. Clip valve onto bracket.
3. Manoeuvre valve and bracket into fitted position.
4. Connect multiplug (x1).
5. Install bolts (x 2) bracket to body.
6. Install washer reservoir securing screws (x2).

Fuel Vapour Valve Inlet Tube-Renew

Repair Operation Time (ROT)
Item
Fuel Vapour Valve Inlet Tube-Renew
Removal
1. Remove RH front wheel arch liner (see Workshop
Manual procedure 01.02.GB Wheel Arch Liner - Front -
RH - Renew).
2. Remove washer reservoir securing screws (x3) and tie
aside for access.
3. Disconnect pipe from tank pipe (quickfit).
4. Remove pipe from support clips (x2).
Installation
1. Install pipe to support clips.
Workshop Manual

Evaporative Emissions (03.13)

Engine (03.00)
Code
03.13.AB
Code
03.13.AC
3-14-1