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 fuel lines:
- b) clogged fuel filter;
Replace fuel filter:
- V) in winter. Fuel in the filter or pipelines has frozen or thickened;
Park your 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, leaking, 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 (the server; 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 out the trouble codes registered by the self-diagnosis system.
The engine has mechanical damage
Check compression or rebuild engine. Eliminate dents in the exhaust system.
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