Step 4 (No Shavings In Fuel Delivery Unit And Fuel Tank)

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-- Fill the fuel tank with five liters of diesel fuel.

-- Drain the fuel tank again completely as described above.

-- Remove the bolts -arrows- and remove the metering unit -A- from the high pressure pump.

Fig 1: Identifying Bolts

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Check the metering unit and high pressure pump for shavings.

Are there any shavings?

Yes. Refer to STEP 5 (SHAVINGS IN HIGH PRESSURE PUMP) .

No. Refer to STEP 6 (NO SHAVINGS IN HIGH PRESSURE PUMP) .