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1.16.3.4. Diagnostics of malfunctions (diesels with the fuel Bosch equipment)

Malfunction
Codes of the possible reasons
The complicated start-up
1 – 9, 12, 13, 20, 22
Unstable idling
1, 2, 14, 18, 21, 22
Uneven idling of the heated-up engine
2, 10, 13, 17, 20, 22
Interruptions in operation of the engine under loading
1, 2, 4, 5 – 10, 16, 22
Falling of engine capacity
1, 4 – 7, 9, 10, 11, 13, 15, 16. 19-22
The increased fuel consumption
7, 9, 10, 11, 13, 14, 19, 21, 22
The engine does not stop
3, 21, 22
Gray exhaust at the maximum load (white or blue)
1, 2, 4, 5, 8, 9, 13, 19, 22
Abnormal minimum and maximum turns of idling
14, 15, 18, 21
The engine does not accelerate
1, 2, 4, 6, 8. 9, 10, 19, 20, 21
The fuel pump of high pressure overheats
16

POSSIBLE MALFUNCTION
ELIMINATION METHOD
1. The empty fuel tank or is littered the ventilating valve of a tank
To fill a tank, to wash out fuel-supply lines, to clear the ventilating valve.
2. Availability of air in fuel system
To pump over fuel system, to eliminate an air suction.
3. The electromagnetic valve of the diesel or the regulator of starting supply of fuel is faulty
To repair or replace.
4. The fuel filter is littered
To replace the fuel filter.
5. Fuel-supply lines of low pressure are littered
To restore sections of fuel-supply lines through passage.
6. Fuel-supply lines of low pressure are littered
To wash out or replace fuel-supply lines.
7. Leaky connections, fuel-supply lines leak or are broken
To tighten connections, to eliminate a leak.
8. Deposits of paraffin in the fuel filter
To replace the filter, to use seasonal fuel.
9. Wrong advancing of injection of fuel
To adjust an initial corner of an advancing of injection of fuel.
10. Nozzles of nozzles are faulty
To repair or replace.
11. The air filter is littered To replace the filtering element.
12. The system of prestarting heating is faulty To replace faulty starting candles.
13. Distribution of injection on cylinders does not correspond to an order of their work To rearrange fuel-supply lines of high pressure in the required order.
14. Abnormal turns of idling To adjust the screw idling turns.
15. Abnormal maximum turns of idling To adjust the screw the maximum turns of the engine.
16. The valve is littered or faulty perepuskny To clear the calibrated channel or to replace the valve.
17. The delivery valve (on the four-cylinder diesel) or two valves is untight (on six-cylinder)
To replace the valve(s).
18. The effort of a buffer spring of the regulator of frequency of rotation of the diesel is not adjusted To adjust effort of a buffer spring.
19. The fuel supply advancing coupling is faulty To repair or replace the coupling.
20. Low compression To restore a compression.
21. The regulator of frequency of rotation of the engine is faulty or is not adjusted To adjust or replace the regulator.
22. The fuel pump of high pressure is faulty or does not give in to adjustment To remove the pump and to give to repair.