Recommendation. Spark plugs should be replaced every 30,000 km or when they fail if the engine starts to run erratically
To perform the work, you will need a special socket wrench for spark plugs by 21 mm.
Advice. Spark plugs are easy to replace
Execution sequence
1. Remove the high-voltage wire from the candle of the first cylinder (see "High voltage wires for motors 2111 and 21114 (8v) - check and replacement").
2. We wipe with a rag and blow compressed air from the tire pump to the installation site of the spark plug (so that grains of sand do not get into the cylinder after removing the spark plug).
3. socket wrench for spark plugs by 21 mm turn off the candle.
4. Before installing the spark plug with a set of round probes, we check the gap between its electrodes (see "Spark plugs for engines 2112 and 211124 (16V) - replacement"). The gap should be 1.0-1.1 mm.
Comment. When checking the gap with flat feeler gauges, the measurement results will be incorrect
5. We adjust the gap by bending the side electrode.
Warning! To avoid damage to the threads in the cylinder head, first wrap the spark plug by hand and then tighten by inserting the wrench into the wrench extension. Spark plug tightening torque 30-40 Nm
6. We wrap the candle in the cylinder head.
7. Similarly, we replace the candles of the remaining cylinders.