The reasons why the motor does not show signs of life are many, and sometimes one problem pulls another, and it is immediately difficult to figure out why the car turned into real estate. We will analyze the most common reasons without touching on the nuances.
Quick clicks when trying to start a car usually means the battery is low or has too little energy to fully activate the starter. Clicking noise occurs because the solenoid and starter gears are constantly trying and cannot connect to the corresponding motor gears.
Starter. A starter is a small electric motor that transmits to the crankshaft the torque needed to ignite the fuel.
If nothing happens after turning the key (or pressing the engine start button) or uncharacteristic clicks are heard, then most likely the problem is in the starter. Sometimes it starts to work only after several unsuccessful attempts to turn the key, or it turns the engine very slowly, although the battery is charged.
The reasons for which the machine does not start in this case can be different: from wear of the brushes or bearings to oxidized contacts and shorting of the wiring. On the spot, you can only check the contacts from the battery, and the battery itself – maybe it is out of order. The rest is best left to specialists. The cost of repairs depends on what happened to the starter. Maybe it can be repaired or have to be replaced entirely.
Generator or battery. In a nutshell, the generator is a device that turns part of the engine’s energy into the accumulated battery charge. A faulty generator does not charge (or does not charge enough) a battery that does not have enough charge to start the starter. The old battery does not hold well and runs out quickly, especially in the cold. Usually the problem is in one thing.
The battery can be discharged “to zero” and then the starter will not spin, and the instrument panel will not turn on. If there is still voltage, the machine will warn you about a discharged battery with an icon on the instrument panel. A car may start after it has been “lit up” by another, but you will feel that the generator charges the battery half the power and there is no “current” again after parking.
If the generator breaks, then the only way is to service. By the way, check the alternator belt if you know where it is located. Perhaps the problem is in it. If you see that it was broken, order a tow truck. In modern engines, the cooling system works on this belt and the engine can be overheated if you go under your own power. You can replace the old battery yourself by first checking the reliability of the contacts on the terminals and the line of wires from the generator to the battery.
Spark plug. The engine may not start due to deposits on candles due to which they work incorrectly or do not give a spark at all. This usually happens due to poor quality fuel. More options: wear on the electrode or plug connector.
Fuel supply system. The fuel pump may be malfunctioning – burned out or wiring problems. By itself, this device rarely breaks. This often happens because of the habit of riding “in pairs”, pouring a minimum into the tank. Fuel pumps are cooled, “swimming” in the fuel, and if it is not enough, then they overheat and work for wear.
Another reason: the fuel hose is damaged. In this case, the car usually smells of fuel. Sometimes the fuel filter is very clogged, which ceases to be a filter element and turns into a plug.
ECU The electronic engine control unit may be faulty – because of this, the engine cannot be started. Often this happens when the ECU box is in corrosion and the contacts on the circuit board inside are damaged. In some machine models, the control unit is structurally unsuccessfully located. It begins to rust after a couple of years of operation, and then problems begin with the engine starting. The only way to help the car is to take it to a service for inspection. Here we add problems with the alarm system, which can block the car due to some kind of error.
Since the car is a complex device consisting of many elements, there can be a great many weak points.
We list other possible problems due to which the machine may not start:
- insufficient pressure in the cylinders;
- leakage of ignition wires;
- faulty position sensors for crankshaft, camshaft, idle, oxygen;
- problems with the timing chain or belt;
- malfunction of the ignition coil;
- or the fuel ran out trite, but you did not notice, or its level indicator is lying.
Car clicking when trying to start in winter
In winter, all the sores of the car get out. Sometimes you have to find out about breakdowns in the morning by a cold car. Here are some reasons why it won’t start to save you time.
The battery has run out. The starter turns slowly or the car shows no signs of life at all. This is one of the most common problems starting an engine in winter. In winter, old batteries run out faster. Especially if there are sources of consumption in the machine circuit in the form of an anti-theft system or a DVR. Replace the battery with a new one and a larger one – it will not harm. The main thing is that the battery is the same size.
Fuel froze. It happens if the car is diesel. Special additives in diesel fuel do not allow it to freeze in cold weather, but these additives do not always work, and sometimes the owners themselves forget that winter has come. The performance of the fuel system may be impaired due to frozen water from poor quality fuel in it. Evacuation to a warm room usually helps to solve the problem.
Glow plugs it’s time to change. In winter, glow plugs often fail. There is only one way out – it’s better to change the kit.
Engine oil thickened. In the cold, many oils have the unpleasant ability to thicken, then the starter can not crank out the viscous mass. In case of frost, pour seasonal oil with a viscosity of 0W or 5W, and also look for reviews of real car owners about the oil that they use in the cold. Reviews are more important than labels on labels, especially since all manufacturers have laudatory words about the minimum susceptibility of their lubricants to low temperatures.