Erroneous actions when starting the engine must be excluded. There should be fuel in the tank, the pressure in the fuel system and compression are normal, the battery is charged, the starter rotates with a sufficient number of revolutions. Contact the workshop to read the codes registered by the self-diagnosis system of malfunctions.
Attention! If the high pressure fuel lines are removed, their joints must first be cleaned with a cold cleaner.
Engine does not start or starts poorly
Fuel supply is insufficient. Faulty fuel supply system
- Check if fuel is being supplied
A) fuel hoses are kinked, clogged, leaking, porous or loose;
- Clean the fuel lines
b) clogged fuel filter;
- Replace fuel filter
V) in winter. Fuel in the filter or lines is frozen or solidified:
- park the car in a heated garage. Check the condition of the fuel filter heater
G) clogged fuel tank ventilation, clogged strainer in the tank.
- Clean the ventilation and filter mesh
Faulty injectors
- Check the injectors by loosening the high pressure fuel line union nuts one by one and make sure the cylinders are working
The engine runs jerky at idle and when pulling away
Weak fastening of the fuel hoses on the injection pump or on the fuel filter
- Replace the fuel hoses, secure them with long clamps, tighten the hollow bolts
Swapped supply and return fuel lines
- Check fuel line connection
Fuel supply is insufficient. Faulty fuel supply system
- Check if fuel is being supplied
A) fuel hoses are kinked, clogged, leaky, porous or loose;
- Clean the fuel lines
b) clogged fuel filter;
- Replace fuel filter
V) in winter. The fuel in the filter or lines is frozen or solidified. Check the condition of the fuel filter heater;
- Park your car in a heated garage
G) clogged fuel tank ventilation, clogged strainer in the tank.
- Clean the ventilation and filter mesh
Faulty injectors
- Check the injectors by loosening the high pressure fuel line union nuts one by one and make sure the cylinders are working
Too much fuel consumption
Air filter dirty
- Replace the air filter element
Leaky fuel system
- Perform a visual inspection of all fuel lines (inlet, outlet and main)
Clogged fuel outlet line
- Blow out the outlet pipe from the injection pump to the fuel tank
Increased idle speed or maximum allowable speed
- Check. Print the trouble codes registered by the self-diagnosis system
The engine has mechanical damage
- Check compression or rebuild engine. Repair dents in the exhaust system
Faulty injectors
- Check the injectors by loosening the high pressure fuel line union nuts one by one and make sure the cylinders are working