Engine Contaminants

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To prevent foreign objects from entering when working on the engine, seal open intake and exhaust channels with suitable plugs, for example from the Engine Bung Set :VAS6122 .
If mechanical damage to a cylinder bank is found, check the intake and exhaust tract and the combustion chambers in the opposite cylinder back for foreign objects to prevent further damage.

NOTE:

If there is mechanical damage to the turbocharger. Refer to TURBOCHARGER, REMOVING AND INSTALLING .