Audi Workshop Service and Repair Manuals > A2 > Power unit | Fuel supply system, diesel engines | Fuel supply, gas operation | Fuel supply system

Draining fuel tank

A - Procedure if fuel tank is more than ³/₄ full → Anchor.

B - Procedure if fuel tank is less than ³/₄ full → Anchor.

Special tools and workshop equipment required

t	Fuel extractor unit -VAS 5190-

Procedure

Observe safety precautions → Chapter.

Observe rules for cleanliness → Chapter.

Caution

Secure earth wire of fuel extractor unit -VAS 5190- to a bare metal part on the body.

A - Procedure if fuel tank is more than ³/₄ full

–	Detach tapered adapter -2- from shaft end -1- of fuel extractor unit -VAS 5190-.

–	Use insulating tape to mark the extraction hose -arrow- at a distance of -a- = 190 mm from the end of the hose.

–	Remove filler cap from fuel filler neck.

Note

Do not insert extraction hose into fuel tank further than marking on hose to avoid damaging the fuel gauge sender -G-.

–	Fit shaft end -1- of fuel extractor unit -VAS 5190- onto fuel filler neck.

–	Push extraction hose into fuel tank until marking on hose -arrow- coincides with shaft end.

–	Drain fuel tank as much as possible through fuel filler neck.

–	Carefully remove extraction hose.

–	Remove fuel gauge sender → Chapter.

–	Extract remaining fuel through opening for fuel gauge sender.

Note

t	The procedure when using a fuel extractor without shaft end is basically the same.

t	In this case, make a mark -arrow- on the extraction hose at distance -a- = 125 mm from the end of the hose -1- using insulating tape. The extraction hose has been properly inserted when the affixed mark is level with the edge of the filler neck.

t	If hose is difficult to insert, apply a thin coat of engine oil. DO NOT use silicone-based lubricant.

B - Procedure if fuel tank is less than ³/₄ full

–	Remove fuel gauge sender → Chapter.

–	Extract remaining fuel through opening for fuel gauge sender.

Audi Workshop Service and Repair Manuals