TT Roadster L4-1.8L Turbo (AWP) (2003)
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Fuel Filler Neck: Service and Repair
AWD
Fuel filler tube, component overview
1. Pressure retention valve
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Clipped to fuel filler unit
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Closes vent line when vacuum from intake manifold is present
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Only remove together with vent line and gravity valve
2. Vent valve
3. O-rings
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Different sizes
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Always replace
4. Seal
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Installed position: sealing lip faces fuel filler unit
5. O-ring
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Always replace
6. Gravity valve
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Only remove together with vent line and pressure retention valve
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Checking, Refer to Fig. 2
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To remove, unclip valve upward and lift out.
7. Ground (GND) connection
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Installed position/check requirements, Refer to Fig.3
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Ensure secure fit of connector at metal ring of fuel filler unit
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Securely tighten eyelet of electrical wire with cap nut, Refer to item - 8 -.
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After installing, check electrical connection of metal ring at fuel filler tube to a blank portion of chassis using multimeter:
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Specified value: approximately 0 Ohms
8. Cap nut -10 Nm
9. Vent line
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To EVAP canister