Note. If the engine is not running at full power, there is increased oil consumption and a lean air-fuel mixture, it is necessary to check the compression in the engine cylinders.
1. Start and warm up the engine to operating temperature.
2. Stop the engine.
3. Disconnect the wires from the spark plugs.
4. Using the key (16 mm), unscrew the spark plugs.
5. Turn the engine over with the starter to remove foreign matter from the cylinders.
6. Screw a control pressure gauge into the spark plug socket.
7. Fully open the throttle by pressing the gas pedal all the way.
8. Scrolling the engine with a starter, read the pressure gauge. The standard compression value is 1420 kPa, the maximum allowable value is 1270 kPa.
9. Repeat steps 6-8 for each cylinder. The difference in values should not exceed 100 kPa.
10. If the compression value in one of the cylinders or its difference relative to other cylinders is not normal, pour a small amount of engine oil into the cylinder through the spark plug hole and repeat steps 6-9.
1) If, after filling the oil, the compression increased, this indicates an increase in the gap between the piston rings and the cylinder mirror due to their wear.
2) If the compression remains the same, then a possible cause is valve sticking, a loose valve seat, or a poor seal between the cylinder head and the cylinder block
11. Wrap candles in sockets and connect wires to them.
Note. The tightening torque of the spark plugs is 20-30 Nm.