Exhaust manifold — removal and installation (Opel Omega B)

Removal

1. Remove the ground cable from the battery.

2. Remove the screws and remove the plastic cover from the top of the cylinder head.

3. Remove the air supply pipe from the air cleaner housing and remove the metal pipe connecting the turbocharger to the heat exchanger.



4. Unscrew the fastening nuts (A) and remove the voltage supply wires (B) from the glow plugs.



5. Unscrew the screws securing the heat-resistant screen.

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6. Remove the heat shield from the top of the manifold.





7. Remove the nuts securing the exhaust inlet pipe to the manifold and move the pipe away from the manifold.

8. Under the vehicle, unscrew the bolts and remove the starter heat shield.

9. Remove the bolts and remove the wiring harness guide from the rear of the cylinder block.

10. Unscrew the turbocharger oil pipes from the cylinder block.

11. Unscrew the bolts and remove the manifold support bracket.



12. Disconnect the vacuum hose from the turbocharger flap diaphragm.

13. Unscrew the exhaust manifold mounting nuts evenly and in a diagonal sequence.



14. Remove the exhaust manifold together with the turbocharger.





15. Remove the exhaust manifold gasket.

Installation

1. Installation is carried out in the reverse order of removal, taking into account the following points.

2. Replace all gaskets.

3. Check and top up engine oil and coolant if necessary.

4. When first started, the engine should idle for a few minutes to allow oil to flow to the turbocharger bearings.