Common Rail Draining

Fig 1: Air Cleaner

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Remove the vacuum line (1).
Remove the air cleaner inlet (3).

Fig 2: AIR FILTER HOUSING
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Disconnect MAF (3) electrical connector.
Remove clean air hose (1).
Remove air cleaner assembly (2).

Fig 3: FUEL LINES
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Disconnect fuel feed (1) and return lines (2).

Fig 4: FUEL REMOVAL
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Connect a vacuum pump (2) to the return fuel line (1).
Operate vacuum pump (2) until no more fuel comes out of the return line (1).