21. Excessive fuel consumption
1. Dirty or blocked air cleaner element.
2. Insufficient tire pressure or wrong size tires fitted.
3. The engine has mechanical damage. Check the compression pressure, if necessary, make the appropriate reconditioning.
4. Excessively high idling speed / maximum speed during operation.
Petrol models
5. Faulty components of the power system, electrical equipment or electronic control.
6. There are leaks in the intake air path.
7. There are damages in the exhaust system/catalytic converter.
Diesel models
8. Clogged fuel return line. Blow out the pipeline in the direction from the injection pump to the fuel tank.
9. The tightness of the fuel system is broken. Visually check all fuel lines (supply, return, pressure), fuel filter and injection pump.
22. Fuel leaks and/or smells of gasoline
1. There are leaks in the fuel/vent lines.
2. The fuel tank is overfilled - refuel only until the gun automatically turns off.
3. There are leaks / evaporation from the lines of power systems and reducing the toxicity of exhaust gases.
23. Engine won't start
Petrol models
1. Stuck injector valves. Check injectors, replace if necessary. Check the power supply to the injectors, for which disconnect the injector connector, connect a diode probe lamp to the wire and turn on the starter - the lamp should start flashing.
2. No signal from CKP sensor or ECT sensor. Check the condition of the relevant wiring, interrogate the memory of the on-board self-diagnosis system (OBD).
3. The patency of petrol pipelines is broken.
4. Clogged fuel filter.
5. Damaged fuel pressure regulator - check residual pressure.
6. Damaged TPS sensor.
7. The fuel tank ventilation is clogged, the filter in the tank is clogged.
Diesel models
See Section 2.
24. A cold engine starts poorly, runs erratically
1. The content of CO does not meet the regulatory requirements - make an appropriate measurement, check the idle speed.
2. Faulty ECT or IAT sensor.
3. Fuel pressure does not match the required value.
4. The tightness of the intake air path is broken.
25. A warm engine starts poorly, runs erratically
1. The tightness of the intake air path is broken. Without turning off the engine idling, moisten the joints of the elements of the duct with gasoline - if the speed stabilizes for a short time, eliminate leaks.
2. Damaged fuel pump check valve.
3. There are leaks in the fuel path.
4. Excessively high fuel pressure in the power system.
5. Faulty EVAP system.
6. The patency of the return fuel line to the tank is broken.
7. Stuck injector valves. Check injectors, replace if necessary. Check the power supply to the injectors, disconnect the injector connector, connect a diode probe lamp to the wire and turn on the starter - the lamp should start flashing.
8. No signal from CKP sensor or ECT sensor. Check the condition of the relevant wiring, interrogate the memory of the on-board self-diagnosis system (OBD).
9. Damaged fuel pressure regulator - check residual pressure.
10. Damaged throttle position sensor (TPS).
11. No power to ECM.
26. Engine runs rough
1. There is a sporadic violation of the quality of the contact connections in the wiring of the fuel pump.
Check the wiring of the fuel pump, air mass meter and fuel pump relay. Check the fuse and terminals of the fuel pump relay. Clean contacts, replace if necessary.
2. Poor quality fuel filled, vapor lock formed in the fuel lines.
3. Insufficient fuel supply.
4. Defective fuel filter.
5. Faulty fuel pump.
6. Faulty injectors.
7. The lambda probe is faulty, or its heating does not function.
8. Faulty TPS sensor.
9. Damaged exhaust manifold or downpipe of the exhaust system.
10. Serviceability of functioning of system EVAP is broken.
11. The fastening of the fuel hoses to the injection pump and the fuel filter has loosened (diesel models).
12. The places of connection of the supply and return pipelines of the injection pump were mixed up.
13. Stuck injector valves. Check injectors, replace if necessary. Check the power supply to the injectors, - disconnect the injector connector, connect the diode probe lamp to the wire and turn on the starter, - the lamp should start flashing.
14. No signal from CKP sensor or ECT sensor. Check the condition of the relevant wiring, interrogate the memory of the on-board self-diagnosis system (OBD).
15. The tightness of the intake air path is broken.
16. The tightness of the vacuum lines is broken.
17. Damaged fuel pressure regulator - check residual pressure.
18. No power to ECM.
27. Engine runs intermittently in transients and idle
1. The tightness of the intake air path is broken. Without turning off the engine idling, moisten the joints of the elements of the tract with gasoline - if the speed stabilizes for a short time, eliminate leaks.
2. The idle speed setting is violated.
3. Faulty or incorrectly adjusted full load sensor. Check TPS sensor.
28. Hot engine won't start
1. The adjustment of the CO content in the exhaust gases is violated. Check CO content and idle speed setting.
2. Excessively high pressure in the fuel system - check the fuel pressure, replace the regulator if necessary.
3. The patency of the return pipeline is broken in the area between the fuel pressure regulator and the fuel tank.
4. Faulty ECT sensor.
5. The tightness of the fuel path is broken.
6. The tightness of the intake air path is broken.
29. Diesel engine runs erratically at idle and when starting to move
1. The fastening of the fuel hoses to the injection pump and the fuel filter has loosened.
2. The points of connection of the supply and return fuel lines to the high-pressure fuel pump are mixed up.
30. The engine continues to run after the ignition is turned off
1. The tightness of the injectors is broken.
2. The fuel cut-off valve does not work (diesel models).