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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 >> High Pressure Pump >> Fuel System Bleeding And Checking For Leaks

Fuel System Bleeding And Checking For Leaks

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-- Let the engine run a few minutes at idle without pressing the accelerator pedal and then stop the engine. The fuel system bleeds itself.

-- Check the entire fuel supply system for leaks.

Replace any leaking parts.

-- 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.

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