Installing injector

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Installation of injector is described separately from removal.

Installation note:

Install hold-down device (1) with curvature facing upwards.

Fig 1: Installing Injector Hold-Down Device

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Install injector (1).

Install hold-down device (2).

NOTE: Make sure hold-down device (2) is correctly seated.

IMPORTANT: Tighten bolt (3) hand-tight only so that hold-down device (2) is slack and if necessary injector (1) can still be turned.

Fig 1: Identifying Injector With Holding Down Element And Mounting Bolt

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Install pressure line (2). Tighten nuts (1) manually only.

IMPORTANT: Connect pressure line (2) without tension only.

To ensure distortion-free installation of the pressure line and to avoid damaging the thread, it must be possible for both nuts to be screwed on easily by hand!

If the nuts cannot be screwed on easily by hand, the injector must if necessary be turned a little.

Fig 2: Identifying Pressure Lines With Nuts

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Turn injector (1) if necessary in direction of arrow until nuts on pressure line can be easily screwed on by hand.

Tighten nut (2) of pressure line hand-tight.

Then tighten down bolt for hold-down device (3).

Tightening torque 13 53 5AZ .

Fig 3: Turning Injector

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Adhere to tightening sequence:

First tighten down pressure line on injector.

Tighten down nut on injector with special tool (1) 13 0 161 and to torque (2). In so doing, grip hexagon head of injector with wrench (3).

Tightening torque 13 53 2AZ .

Fig 4: Tightening High-Pressure Fuel Line Onto Injector Using Torque Wrench And Special Tool (13 0 161)

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For cylinders 4 and 8, tighten pressure line (1) with torque (2) and crowfoot wrench (3). In so doing, grip hexagon head of injector with spanner.

Tightening torque 13 53 2AZ .

Fig 5: Tightening Pressure Line Using Crowfoot Wrench

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After this, tighten pressure line on rail.

Tighten down pressure line on rail with torque wrench (1) and special tools (2) 00 1 440 , (3) 13 0 162 and (4) 13 0 161 .

Tightening torque 13 53 2AZ .

Fig 6: Tighten Pressure Line On Rail Using Torque Wrench And Special Tools (001440, 13 0 162 And 13 0 161)

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