Every 4 years (regardless of mileage).
Checking and replacing spark plugs
1. Proper functioning of spark plugs is vital to the performance of the engine. Installed candles must match the type of engine (see technical data).
2. The type of spark plugs recommended for use in your car's engine are listed in the Owner's Manual that came with your car when you bought it.
3. If the correct type of spark plug is used and the engine is in good condition, the spark plugs will not need to be serviced between scheduled replacements. Cleaning candles is rarely necessary. It should be carried out with a special tool so as not to damage the ends of the electrodes.
4. A special socket wrench with extension is required to remove and install spark plugs. This wrench has a rubber grommet inside that separates the porcelain insulator from the inside of the wrench and protects the spark plug from damage and keeps the spark plug from falling out during insertion and removal. To check and adjust the gaps of 8 candles, you will also need a set of probes, as well as (Ideally) torque wrench for tightening the spark plug to the required torque.
5. Remove the water pump belt cover from the top and front of the engine. The cover is secured with three screws.
6. Remove the top section of the intake manifold (chapter 2B).
7. To access the spark plugs on the front cylinder block, remove the bolts from the intake manifold control engine. Move that engine aside. It does not need to be disconnected (see fig. 32.7, a, b).
8. Candles are numbered: from 1 to 3 on the back block and from 4 to 6 - on the front. The numbering starts from the camshaft drive chain.
9. If the markings are not visible on the high-voltage wires, then mark them according to the cylinder numbers. Pull the wires off the spark plugs (pull only on the rubber boot, not on the wire). Loosen wires if necessary (see fig. 32.9, a, b).
10. Before removing the candles, it is recommended to remove water and dirt from their sockets with a rag, clean brush, compressed air or a vacuum cleaner.
Attention! Wear protective goggles when working with compressed air!
11. Turn out the candles with a special key (see fig. 32.11, a, b). Keep the head aligned with the candle - if tilted, the porcelain insulator may be damaged. Remove the candle from the socket.
12. Other operations are carried out in the same way as for a 4-cylinder engine (paragraph 29). Finally, install the removed components.
Checking high voltage spark plug wires
13. See item 19 paragraph 29. Please note that the wires are numbered as indicated in item 8 above.
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