Since on a sixteen-valve engine the upper part of the intake manifold blocks access to the cylinder head, it is necessary to disconnect the intake manifold.
Disconnect the spark plug cables. Disconnect the accelerator cable.
Remove the connecting hose between the throttle valve and the mixture regulator.
Loosen the nuts at the junction of the upper flap and the lower part of the intake manifold.
Move aside the high-voltage wire guide tube with wires.
[The original text can be found on the portal: VWmanual]
Remove the upper portion of the intake manifold.
When installing, check that the gasket between the upper and lower parts is correctly positioned.
Unscrew two bolts in the middle of the cover and six more around the perimeter.
Remove the cover.
When reinstalling, be sure to install new gaskets (only in a set). The longer gasket serves to prevent oil from leaking into the spark plug passages and should be carefully installed in the same manner as the tight-fitting rubber gasket.
Tighten the bolts to 10 Nm. On a sixteen-valve engine, the cylinder head cover 1 (figure 170) it is held on the head by two bolts 2. For sealing on one side there is a gasket 3 - for the spark plug holes and a tight-fitting rubber gasket 4.
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