Volkswagen Workshop Service and Repair Manuals > Polo Mk5 > Power unit | Fuel supply system - Diesel engines | Fuel supply, gas operation | What to do if fuel tank filled with incorrect fuel | Step 1 (Engine was started with incorrect fuel)

Step 1 (Engine was started with incorrect fuel)

–	Empty fuel tank as far as possible via fuel filler neck using fuel extractor -VAS 5190- → Chapter.

–	Fold up rear seat bench.

–	Remove flange cover.

Note

Press in securing ring to release fuel line.

WARNING

Bear in mind that the fuel pump can be activated due to opening of a door with the battery connected. Fuel can escape if the system has been opened.

–	Pull fuel supply line (blue line or blue marking) -1- off fuel delivery unit. Disconnect push-on connector → Chapter.

–	Connect pressure gauge pipe -VAS 6551/5-2- to the fuel return line -1-.

–	Put open end of line -VAS 6551/5-2- into a suitable container.

–	Connect vehicle diagnostic tester and then carry out guided function „Fuel pump activation (Emptying fuel system)“.

Note

The fuel pump is now activated.

–	Repeat procedure, if necessary, until fuel tank is completely empty.

Remove fuel delivery unit → Chapter.

–	Check fuel tank for filings.

–	Drain fuel pump reservoir of fuel delivery unit.

–	Carry out a visual inspection for foreign bodies and filings in fuel pump reservoir and on preliminary filter.

Filings found?

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