The situation when SsangYong Kyron With a 2.0-liter diesel engine, it refuses to start, always catches the owner by surprise. The Korean SUV has proven itself as a reliable car, but even time-tested cars have failures in the fuel system or electrical equipment. Most often, the problem lies in the combination of several factors, which with an integrated approach are solved quite quickly.
The first thing the driver needs to do is listen carefully to the sound of the starter when trying to start. The nature of the rotation of the crankshaft and the presence of grips can tell a lot to an experienced mechanic or an attentive owner. If the starter spins cheerfully, but the engine is silent, then the problem lies in the fuel supply or engine control system.
In the case when the starter barely turns the shaft or only a quiet click is heard, you should look for the reason in the battery or the starter device itself. Diesel engine It is extremely sensitive to scrolling quality, as the ignition comes from high compression, not from a spark. Weak starting current will not allow you to create the necessary compression to start work.
Problems with starter and electrical equipment
The most common, but common reason is discharged battery. Owners of diesel versions of the Kiron know that cold start requires significantly more energy than gasoline counterparts. If you hear only the crackling of the retracting relay or the starter rotates with a clear tape, first of all check the voltage at the terminals.
But it’s not always about the battery itself. Oxidized contacts, poor engine “mass” or a malfunction of the starter itself can give a similar picture. Particular attention should be paid to the wiring going to retractableSince vibrations of the diesel engine over time can disrupt contact in the connectors.
Also, do not discount the condition of the candles incandescent. Although they are needed mainly to facilitate start-up in the cold season, a faulty circuit incandescent often blocks the engine start-up by the control unit. Burning light bulb The spirals on the dashboard are the first indicator of problems in this system.
- ⚡ Check the voltage on the battery terminals under load, it should not fall below 9.5-10 Volts when scrolling.
- ⚡ Clean the oxides on the battery terminals and check the reliability of the mass attachment on the body and engine.
- ⚡ Listen to the starter’s work: extraneous noise may indicate wear of a bendix or bushings.
Air traffic jam and fuel system
If the starter turns confidently, but the engine does not even "grab", the probability of suffocating the fuel line is high. For a diesel engine Common Rail The presence of air in the system is a critical obstacle. A high pressure fuel pump (HPPP) cannot pump air, and the fuel simply does not reach the nozzles.
Air can enter the system through loose connections, cracked hoses or when the tank is fully fueled when the pump captures residues from the bottom. In such cases, manual pumping of fuel with a pear or pump is necessary, if it is provided by the design. Sometimes it helps a long scrolling starter, but it puts the battery down.
Another common problem is pollution. fuel-filter. If you haven’t changed the filter element in a long time, its throughput may have dropped to critical values. The engine may start and stop or not start at all due to starvation.
☑️ Fuel system inspection
It is also worth paying attention to the operation of the electromagnetic valve of fuel cutoff. If it does not receive a signal from the ECU or it failed mechanically, the fuel will not physically enter the mainline, no matter how much you spin the starter.
Sensor and electronic control malfunctions
Modern. SsangYong Kyron The 2.0 diesel is controlled by complex electronics that block the start in the presence of critical errors. Often drivers are faced with a situation where the car does not start due to the failure of one of the key sensors.
The most likely candidates for the “complaint” are crankshaft positioner (DPKV) and camshaft position sensor. Without a signal from the DPCV, the control unit does not know when to supply fuel and spark (in gasoline engines), so starting is impossible. The sensor can become contaminated with metal shavings or simply burn out.
It is also worth mentioning the pressure sensor in the ramp. If the ECU sees that the pressure is not rising or the signal from the sensor is missing, it may prohibit the start for safety reasons. Diagnostics through OBDII scanner in this case will show a specific error code, which will greatly simplify the search for a malfunction.
⚠️ Attention: Don’t ignore the Check Engine light bulb or the spiral icon. Attempts to start a car with a faulty crankshaft sensor can lead to the fact that the car stalls on the move at the most inopportune moment.
Problems with nozzles and TNVD
System system Common RailThe turbocharged version of the turbocharged version in the Kyron 2.0 is very demanding on fuel quality. The use of low-grade diesel quickly leads to the failure of precision pairs of TNVD and the nozzles themselves. If the nozzles "pour" or do not hold the pressure, the engine will not be able to start.
Signs of malfunction of nozzles are often three engines (if it is still started), black smoke from the exhaust pipe and increased fuel consumption. In advanced cases, fuel can drain into cylinders or in reverse without creating the necessary pressure for spraying.
The TNVD is the heart of the diesel system, and its breakdown is expensive. Wear of plunger pairs leads to a drop in the pressure in the ramp below the threshold necessary for opening the nozzles. Diagnosing the ramp pressure through the scanner in real time will help determine if the pump is holding the required pressure when scrolling with the starter.
| Symptoms. | Possible cause | Method of verification |
|---|---|---|
| Starter's spinning, but silence | No fuel supply. | Pressure check in the ramp |
| The engine is catching and stalling. | Stifling or low pressure | Inspection of highways and filter |
| Black smoke at launch | Faulty injectors. | Flu-back check |
| A pressure error is burning. | Sensor failure or TNVD | Scanner diagnostics |
Impact of climate conditions and seasonal problems
Winter diesel launch Kyron It is a separate topic for conversation. At low temperatures, diesel fuel paraffinizes, turning into a gel that doesn't pass through filters. Even if the car started half-turn in the summer, in the winter it can stand up with a stake.
Parafinization occurs not only in the tank, but also in the fuel intake and highways. In this case, no replacement of filters will help until the fuel in the system is liquid. The car must be placed in a warm room or use special defrosting devices.
In addition, cold air has a different density, and a proper preheating system is required for ignition. If the candles are weak or the timer for their inclusion is knocked down, it will be extremely difficult to start the engine in the cold. Compression in cylinders also falls when the engine is strongly cooled.
- ❄️ Use winter diesel or add an antelene at the first sign of cold snap.
- ❄️ Check the performance of candles before the onset of cold weather, measuring the current consumption.
- ❄️ Try to keep the tank full to avoid condensation that freezes in the first place.
⚠️ Attention: Never try to start the engine by diluting the fuel with gasoline by eye. This can lead to detonation and destruction of the piston group, as the cetane number of the mixture will become unpredictable.
Immobilizer and other blocking factors
Sometimes the reason for the failure of the launch is not in the mechanics, but in the protection against theft. Staffed immobilizer In the case of a Chiron, it can block the engine start if it does not “see” the chip in the key or if the battery is dead in the key fob (although more often this affects the central lock, but there are exceptions in the logic of operation).
The key symbol on the dashboard that flashes or burns constantly may indicate a problem with key identification. In such cases, the engine can spin the starter, but there will be no fuel supply. It is also worth checking the fuses responsible for the engine control unit and fuel pump.
We should not forget about the human factor. On cars with automatic transmission, the engine may not start if the automatic transmission selector is not transferred to the position P (Parking) or N (Neutral) The selector position sensor may fail, and the machine “thinks” that the gear is on.
In conclusion, it is worth noting that the diagnosis of a diesel engine requires a consistent approach. You should always start with a simple one: checking the fuel level, the state of the battery and filters. Only excluding these factors, it is worth delving into the verification of electronics and TNVD.
Why does Kiron start and immediately die?
Most often this indicates air sucking into the fuel line. After starting, the pressure drops, the air enters the pump, and the engine stalls. The second reason is the failure of the pressure regulator in the ramp or the SCV valve on the TNVD.
Can I get Kiron off the pusher?
Theoretically possible, but highly discouraged for cars with automatic transmission (AGB). Pushing can damage the box. On the mechanics you can start, but for a diesel engine you need a high speed of rotation to create compression.
How often do I need to change the fuel filter in a diesel-powered Kiron?
The recommended interval is every 10-15 thousand kilometers, especially considering the quality of the fuel. Savings on the filter can lead to expensive repair of injectors and TNVD.