Misfires when the engine is running under load (while the vehicle is moving) (Kalina 1119)

1. The fuel filter and/or engine fuel system lines are clogged (see "Power supply system").

2. The fuel injectors are faulty (see "Injectors - checking and replacement").

3. The spark plugs are faulty or the gap between the electrodes is set incorrectly (see "Spark plugs - replacement" or "1.61 engine spark plugs - replacement").

4. The insulation of high-voltage wires is damaged (see "High Voltage Wires - Checking and Replacing").

5. The engine management system is faulty (see "Checking the technical condition of the engine management system").

6. Insufficient compression in the engine cylinders (see "Compression in engine cylinders - check").

7. Leakage (burnout) of the valves of the gas distribution mechanism (see "Cylinder head - checking and grinding valves").

8. The ignition system is faulty (see "Checking the technical condition of the engine management system"),

9. Vacuum hose connections are not tight (check the tightness of the fittings).