13 53 240 Replacing complete fuel rail (N12, N16)

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks

Recycling

Fuel escapes when fuel line is detached. Catch and dispose of escaping fuel.

Observe country-specific waste disposal regulations.

Remove protective cap (1) from compressed air valve.

Connect compressed air line to compressed air valve.

Blow fuel back into fuel tank with a short blast of compressed air (max. 3 bar).

Fig 1: Identifying Compressed Air Valve Protective Cap

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Unlock and detach fuel line (1).

Check fuel line for damage.

Replace damaged fuel line.

Fig 2: Identifying Fuel Line

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NOTE: Only if fuel line is damaged!
Install new fuel hose with anti-chafing protection.

Also install a double C clip (1) to ensure that clearance from other hoses is provided.

Fig 3: Identifying Double C Clip

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Close off fuel line with special tool 13 5 281.

Fig 4: Closing Off Fuel Line Using Special Tool (13 5 281)

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Release screws.

Tightening torque 13 53 4AZ .

Detach fuel rail (1) from cylinder head.

Fig 5: Identifying Cylinder Head Fuel Rail

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Unlock connector (1) and remove.

Remove fuel rail (2).

Fig 6: Identifying Fuel Rail With Connector

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Lever out retainers (1).

Pull fuel injectors (2) out of fuel injection pipe.

Installation note:

Replace sealing rings on fuel injectors and coat with anti-friction rubber coating.

Fig 7: Identifying Fuel Injectors With Retainers

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NOTE: Check stored fault messages.
Delete fault memory.