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Высокие технологии VVT-i engines
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Non-VVT-i engines

Removal

6 To prevent the possibility of mixing up

22.6 When removing the spark plug HT leads, pull only on the boot and use a twisting/pulling motion

spark plug leads, work on one spark plug at a time. Remove the HT lead and boot from one spark plug. Grasp the boot - not the lead - as shown, give it a half twisting motion and pull straight up (see illustration).

7 If compressed air is available, blow any dirt or foreign material away from the spark plug area before proceeding (a common bicycle pump will also work).

8 Remove the spark plug (see illustration). Examination of the spark plugs will give a good indication of the condition of the engine.

If the insulator nose of the spark plug is clean and white, with no deposits, this is indicative of a weak mixture or too hot a plug (a hot plug transfers heat away from the electrode slowly, a cold plug transfers heat away quickly).

9 If the tip and insulator nose are covered with hard black-looking deposits, then this is indicative that the mixture is too rich. Should the plug be black and oily, then it is likely that the engine is fairly worn, as well as the mixture being too rich. If the insulator nose is covered with light tan to greyish-brown deposits, then the mixture is correct and it is likely that the engine is in good condition.

10 Undo the two nuts, prise out the two plastic fasteners at the rear, then lift off the plastic cover on top of the engine (see illustrations).

11 Disconnect the wiring plugs from the ignition coils.

12 Undo the bolts and pull the ignition coils from the top of the spark plugs (see