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Home >> Audi >> 2009 >> Q7 4.2 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (3.0L - Diesel Fuel Injection - Engine Code: CATA) >> 23 Diesel Fuel Injection >> Injection System Components >> Fuel Pressure Sensor -G247-, REMOVING AND INSTALLING >> Installing

Fuel Pressure Sensor -G247-, REMOVING AND INSTALLING: Installing

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

The Fuel Pressure Sensor -G247- does not have a gasket. It has a biting edge and for this reason cannot be reused.

Check the new Fuel Pressure Sensor -G247- for damage to biting edge and thread.

Check the sealing surface on the fuel rail hole.

Coat the Fuel Pressure Sensor -G247- thread and biting edge with diesel fuel.

-- Tighten the Fuel Pressure Sensor -G247- by hand.

-- Tighten the Fuel Pressure Sensor -G247- to the specification.

Fuel System, Bleeding and Performing a Leak Test

-- After installing, let the engine run at a moderate speed for a few minutes and then stop it.

NOTE:

The high pressure connections must "not" be opened; the fuel system bleeds itself.

-- Check DTC memory and erase, if necessary.

-- Switch off ignition.

-- Carefully check the entire fuel system for leaks.

If there are leaks even though the correct tightening specification was used, replace the affected component.

-- Perform a road test where the accelerator pedal is pressed all the way down at least one time. Then check the high pressure area again for leaks.

NOTE:

If there is still air in the fuel system, the engine may switch to emergency mode during the road test. Turn off the engine and erase the DTC memory. Then continue the road test.

-- After the road test, check the DTC memory again.