A 0.8-liter engine stops responding to turning the key, most often due to a critical battery discharge or failure of the crankshaft position sensor. Owners of small cars Daewoo or Chevrolet They know that the small volume of the engine makes it extremely sensitive to the quality of the spark and compression. If the starter rotates the crankshaft, but there is no spark in the cylinders, the problem lies in the ignition or fuel supply system. If there is no response from the starter, the first thing to do is check the condition of the terminals and the presence of ground on the body.
Failure of the starting system can be caused by simple oxidation of contacts or failure of the starter solenoid relay. In the cold season, the situation is aggravated by thickened oil and loss of battery capacity. Diagnostics begins with a visual inspection of the engine compartment and checking the voltage of the on-board network. It is important not to panic and consistently rule out the most likely causes of the malfunction.
Modern diagnostic methods make it possible to quickly identify malfunctions in electronic control units. However, on used cars, mechanical damage to the wiring or wear of timing elements is common. If you hear knocking or squeaking noises when cranking the starter, further attempts to start it may result in serious engine damage. It is necessary to clearly understand the difference between the lack of rotation of the crankshaft and the lack of ignition of the mixture.
Problems with power supply and starter
The main reason why Matiz does not start, the battery is insufficiently charged. The small displacement of the engine requires minimal effort to turn, but even in this case, the low current will not allow the ignition system to form a powerful spark. Check the voltage at the battery terminals: it should be at least 12.5 Volts at rest. When it drops below 11 volts, the starter can only click or slowly turn the shaft.
Contact oxidation and poor ground create resistance that blocks starter current. Owners often forget that the engine ground wire is attached to the body and rusts over time. Cleaning contacts and tightening the terminals often solve the problem of instantaneous discharge when trying to start. It is also worth inspecting the power cables for chafing and melted insulation.
- 🔋 Checking the charge level and electrolyte density in the battery.
- 🔌 Inspection and cleaning of battery terminals and mass attachment points on the body.
- ⚙️ Diagnostics of the retractor relay and starter brush assembly.
- 🔍 Checking the integrity of the fuses in the main unit.
⚠️ Attention: If you hear a loud click when you turn the key, but the starter is silent, the starter armature may be jammed or the circuit inside the solenoid relay may be broken.
A malfunction of the starter itself manifests itself in the form of a lack of rotation of the bendix or its free rotation without engaging the flywheel. In this case, dismantling of the unit and troubleshooting is required. The 0.8 liter engine is characterized by rapid wear of the starter bushings, which leads to armature misalignment. Regular lubrication and maintenance extend the life of this unit.
Ignition system malfunctions
Engine Matiz 0.8 equipped with an ignition distributor (distributor), which is the weak link of the entire system. Moisture getting inside the distributor cap causes spark breakdown to ground, especially in damp weather. High voltage wires are also prone to aging and cracking, leading to loss of voltage on the spark plugs. The check must begin with a visual inspection for the presence of a spark with the spark plug unscrewed.
The ignition coil on these engines operates intensively and often fails due to overheating or internal breakdown. If there is no spark on all cylinders at the same time, the likelihood of a malfunction of the coil or Hall sensor is maximum. Replacing these elements often requires a minimal set of tools. It is important to use original spare parts or high-quality analogues, since cheap components do not last long.
Cylinder operating order
The operating order of the 0.8 S-TEC II engine cylinders is: 1-3-4-2. Cylinder numbering starts from the flywheel side (gearbox side). Proper connection of armor wires is critical for stable engine operation.
Spark plugs require regular replacement and gap checking. Black deposits indicate a rich mixture or a malfunction of the ignition system, white deposits indicate overheating or a lean mixture. Heat number candles must strictly comply with the manufacturer's recommendations. Using unsuitable spark plugs can lead to detonation and destruction of the piston group.
- 🕯️ Checking the gap and condition of the spark plug electrodes.
- ⚡ Diagnostics of the ignition coil and switch module.
- 💧 Inspect the distributor cover for cracks and moisture.
- 🔌 Checking the resistance of high-voltage wires.
⚠️ Attention: When checking the spark on the weight, do not hold the spark plug or wire in your hands without dielectric gloves, the electric shock from the coil can be noticeable and unpleasant.
Fuel system and gasoline supply
Lack of fuel in the ramp is a common reason why Daewoo Matiz won't start. The fuel pump may not turn on due to a blown fuse, relay, or wear on the brushes of the motor itself. When you turn on the ignition, you should hear the characteristic hum of the pump in the tank. If it's quiet, check fuel rail pressure using a pressure gauge. The normal value is around 3.0–3.5 bar.
Contamination of the fuel filter and fuel pump mesh leads to a decrease in system performance. The engine may start and stall or run rough. On used cars, it is recommended to change the fine filter every 15-20 thousand kilometers. It is also worth paying attention to the fuel pressure regulator, which can dump gasoline back into the tank.
| Component | Problem Symptom | Test method |
|---|---|---|
| Gasoline pump | No hum when the ignition is turned on | Rail pressure gauge |
| Injectors | Unstable idle, tripping | Checking the Spray Pattern |
| Pressure regulator | Long start-up, pressure drop | Visual inspection (gasoline in vacuum) |
| Fuel filter | Loss of power, jerking | Replacement or purging |
The nozzles may be contaminated with resin deposits, which disrupts the spray pattern. In this case, the mixture does not ignite effectively. Flushing the injector with special liquids or ultrasonic cleaning restores performance. It is important to use high-quality fuel, since low octane number and impurities quickly damage the fuel system.
☑️ Fuel system diagnostics
Sensors and Electronic Control (ECU)
The electronic control unit (ECU) receives signals from many sensors, and the failure of one of them can block starting. The critical element is crankshaft position sensor (CPS). Without a signal from it, the ECU does not know when to give a spark and open the injectors. A broken wire or contamination of a toothed pulley often causes the motor to suddenly stop.
The absolute pressure sensor (MAP) also affects the mixture composition. If it malfunctions, the engine may start with difficulty or stall immediately after starting. Errors in the operation of the computer are stored in memory and read through the diagnostic connector OBD-II. Presence of a burning lamp Check Engine on the instrument panel indicates a malfunction in the control system.
The immobilizer can block the engine from starting if it does not recognize the key chip. In this case, the starter turns, but there is no fuel supply or spark. The immobilizer lamp on the instrument panel will flash or stay on. To solve the problem, you may need to re-flash the key or replace the reading antenna.
- 📟 Reading error codes through a diagnostic scanner.
- 🔌 Checking the integrity of the crankshaft sensor wiring.
- 🔑 Diagnostics of the immobilizer system and key chip.
- 🧹 Cleaning connector contacts from oxidation.
⚠️ Attention: Resetting errors by removing the battery terminal does not eliminate physical damage to the sensor, but only temporarily removes the symptom. A full diagnosis is required.
Helpful advice: If you suspect a malfunction of the DPKV, try lightly tapping it with the handle of a screwdriver while cranking the starter. If the engine seizes, the sensor definitely needs to be replaced.
Mechanical engine problems
Mechanical malfunctions of the 0.8 liter engine are less common, but their consequences are more serious. A broken timing belt causes the camshaft to stop rotating and the valves to freeze in the closed position. In this case, there will be no compression in the cylinders completely. The engine will turn over with the starter too easily and without the characteristic compression sounds.
Scuffing in the cylinders or wear of the piston rings reduces compression, making starting difficult, especially in cold weather. Oil entering the combustion chamber also interferes with the normal ignition of the mixture. Compression measurement is a mandatory diagnostic step if mechanics are suspected. Normal values for Matiz 0.8 are 11-13 bar.
The intake of unaccounted air through the intake manifold gaskets or vacuum hoses leans the mixture. The engine can only be started with the throttle valve open or after the third or fourth try. The search for leaks is often carried out using the “Quick Start” aerosol, spraying on suspicious places and observing the change in speed.
Main conclusion: If the timing belt is intact and there is a spark with fuel, but the engine does not start, measure the compression. Lack of compression means a major overhaul is required.
Seasonal features and starting in cold weather
In winter, a list of reasons why Matiz does not start, is replenished with condensation in the fuel system and freezing of the lubricant. Water that gets into the tank accumulates near the fuel pump grid and freezes, blocking the fuel supply. Using special defrosters or adding industrial alcohol helps solve the problem. It is also worth checking the condition candles and dry them if necessary.
Thick engine oil creates high resistance to crankshaft rotation. The starter may not develop the required speed, and the ECU will not record the signal from the shaft position sensor. Warming up the battery before starting (turning on the headlights for 1-2 minutes) helps activate chemical processes and increase current output. Do not turn the starter for more than 10 seconds at a time.
Humidity and temperature changes contribute to the formation of condensation in the exhaust system and on the ignition elements. Treating high-voltage wires and coils with dielectric spray prevents current leakage. Storing the car in the garage or using a blanket over the engine makes morning starting much easier.
- ❄️ Use of winter fuel and anti-gels.
- 🔋 Warm up the battery before starting by turning on the lights.
- 💧 Adding a fuel dryer to the tank.
- 🧥 Insulation of the engine compartment in severe frosts.
Frequently asked questions (FAQ)
Why does Matiz 0.8 start and immediately stall?
Most often this occurs due to a malfunction of the idle air regulator, air leaks or low pressure in the fuel rail. It's also worth checking the throttle position sensor.
Which timing belt is better to install on Matiz 0.8?
It is recommended to use original belts GM/Daewoo or trusted brands like Gates and Contitech. It is important to change the belt along with the tension pulley every 60 thousand km.
Where is the crankshaft sensor located on the 0.8 engine?
The sensor is located on the engine flywheel, on the gearbox side. Replacing it often requires access from below the car or removing the gearbox.
Is it possible to start a Matiz from a pusher?
Yes, the 0.8 engine with a manual transmission can be started using a pushrod. However, it is not recommended to do this often, as there is a risk of damaging the catalyst or stretching the timing belt.
What to do if the fuel pump fuse is blown?
It is necessary to replace the fuse with a similar one. If it burns out repeatedly, you need to look for a short circuit in the wiring or a malfunction of the fuel pump itself.