Exhaust manifold — removal and installation (Opel Astra F)

Disconnect the negative battery terminal.

Disconnect the spark plug wires from the spark plugs and, if necessary, tag them for reinstallation.

Loosen the clamp screw and disconnect the hot air supply tube to the air cleaner from the housing on the manifold.

Remove the screws and remove the hot air shroud from the manifold.



While working under the manifold, unscrew the four bolts securing the exhaust pipe to the manifold.

Disconnect this pipe from the manifold and hang it by the wire. Do not allow the front section of the exhaust system to hang down under its own weight. Replace the gasket.

Unscrew the nuts and remove the manifold from the cylinder head. Replace the position of the front engine bracket, which is secured with one of the bolts (studs) of the manifold and remove the manifold gasket.

Install the manifold using a new gasket and make sure the engine bracket is in place under the corresponding manifold nut.

Connect the exhaust pipe to the manifold, install a new gasket.

Further installation is carried out in the reverse order of removal.