WIS Document: 2809

| | Replacement of spark plugs and HT leads, MOTRONIC (V6 engine) | To remove | 1. | Remove the engine covers. | 2. | Remove the three front spark plugs/HT leads. | 3. | Remove the air induction hose from between the air cleaner and the throttle body. | 4. | Remove the seven nuts securing the upper part of the intake manifold. | 5. | Slacken the lower and remove the upper bolt from the intake manifold bracket. | 6. | Unplug the idle air control valve connector. | 7. | Disconnect the vacuum hose. | 8. | Remove the brake servo hose from the intake manifold. | 9. | Remove the cable conduit. | 10. | Disconnect the leads from the TCS throttle body and main throttle body. | 11. | Remove the three hoses located underneath the throttle body. | 12. | Carefully lift off the upper part of the intake manifold and place it on the engine in the centre. | Important | Cover or plug the inlets to the engine so that dirt and other foreign objects are prevented from getting into the engine. | | 13. | Remove the three rear spark plugs/HT leads. | 14. | Bend up the intake manifold and clean the flanges. Fit a new gasket. | To fit On refitting, the seven nuts must be tightened in the order shown. Tightening torque, spark plugs: 25-29 Nm (18.5-21.5 lbf ft). Tightening torque, intake manifold: 20 Nm (15 lbf ft)