AD15.45-B-5000A | Flame starting system (FLA) diagnosis, Troubleshooting | 12.02.16 |
Cumbustion engine 372, 374, 376, 377, 922, 925, 926, 927
Troubleshoot diagnosis The components put in brackets correspond to the exploded view numbers and also to the removal figures and cold start auxiliary system installation (by flame) AR15.45-B-0001A | |||
Failure | Cause | Solution | |
Electric part | |||
Pilot lamp: | |||
It does not light after having connected the contact key | - It lacks power supply. - K 15 contactor damaged. - Electric module damaged. | - Check electric part. - Check contactor. - Check the electronic module. | |
Spark ignition (18): | |||
It does not heat | - It lacks power supply. - Supply current weak, insufficient. | - Check the cause. - Check wiring and possible short-circuits. Measure electric values. | |
- Spark ignition (18) damaged. | - Replace spark ignition. | ||
Fuel supply | |||
Solenoid valve (3): | |||
It does not gets fuel pressure or the pressure is insufficient | - Hollow screw (16) with dispenser hole clogged. | - Check the fuel passage by the hollow screw. - Check the fuel filter condition. | |
- Loose or damaged pipes (12). | - Check the pipes and tighten connections or replace them. | ||
Valve (3) gets electric current usually, but it does not perform change | - Deficiency on valve electromagnetically driven (3). | - Replace valve (3) completely | |
Valve (3) gets pressure fuel, the electric supply is normal, however it does not inject fuel | - Deficiency on valve mechanical parts (3). | - Replace valve (3) completely. | |
Fuel injector set (11): | |||
Solenoid valve (3) is in order, however, injection set (4) does not pulverize or deform it | - Injector set (4) with overflowing filter or pulverization hole deformed. | - Replace injector set (4) and check the combustion chamber condition. | |
Cold start causes smoke on the star | - Spark plug does not heat sufficiently | - Check the tension and supply amperage. | |
-Damaged spark plug (18). | - Replace spark plug (18). | ||
- Injector altered (4). | - Replace the injector set (4) . |