CAUSE | SOLUTION |
Difficult to start the engine or the engine does not start at all |
| No system works preheat the diesel engine | Check and, if necessary, recover the system of preliminary heating of the diesel engine |
| Do not open the fuel shut-off valve | Check the fuel shut off valve motor control, and anti-theft system |
| A defect in the fuel supply system | Check fuel supply to the engine |
| Fuel line leaking, blocked or twisted inside | Clean and, if necessary, replace the fuel supply lines |
| Clogged fuel filter | Replace the fuel filter |
| In winter, there is the fuel filter the water or ice | Warm up the car in a heated garage |
| A blockage in the fuel tank ventilation or dirty fuel filter, located in the fuel tank | Clean the ventilation system of the fuel tank or fuel filter |
| Incorrectly adjusted fuel injection timing | Check and adjust the fuel injection timing |
| Faulty fuel injectors | Check the fuel injectors |
| Faulty high pressure fuel pump | Replace the high pressure fuel pump |
The engine runs only at idling speed |
| Loose fastening of fuel hoses on the high pressure fuel pump and the fuel filter | Secure fuel hoses properly |
| Improperly connected supply and return fuel hoses on the high pressure fuel pump | Check the connection of fuel hoses |
Excessive consumption |
| Clogged fuel filter | Replace the fuel filter |
| Leaky fuel system | Check and, if necessary, repair the fuel system for leaks |
| Clogged fuel return pipe | Clean the fuel return pipe |
