Why not start the car and what to do
Do It Yourself Educational Program / / December 19, 2019
Problems because of which does not twist the starter, and ways to address them in detail analyzed in a separate article. In this article we consider the situation where the starter is working properly, but the engine will not start.
1. included immobilizer
What's happening: starter turns confidently, but the engine will not start.
After setting the alarm immobilizer control proceeds to it. Sometimes due to hardware failure or accidental taps on the key fob in your pocket is included anti-theft protection. Depending on the selected setting and the circuit blocks immobilizer fuel pump, fuel injectors, ignition system or the starter. In any case, start the engine will not work.
What to do: if you accidentally lock yourself included, try to remove it, to find the right combination in the instructions or on the Internet. In the case of signaling errors to deal with the problem it can only installer or a competent electrician.
2. rarefied battery
What's happening: starter crank the engine, but slowly. on the instrument panel lights dim or go out.
Due to the low battery charge or insufficient starter drives the motor with difficulty, and the launch can be no question. This happens after a long time, particularly in winter, when the problem is compounded by thickened engine oil.
What to do: start the car, "lit" by a rechargeable battery or a neighbor other ways, and then charge or replace the battery.
3. Faults fuel system
What's happening: the motor is running, but no signs of life.
Without supplying fuel to cylinders of the engine, of course, not be started. If the gasoline in the tank is then often cause lack of fuel in the combustion chamber - filter is clogged, the fuel pump is broken, or a switch.
Impurities in the low-quality fuel clog the mesh filter element, and gasoline does not go further. In winter, it can clog the frozen water. From that due to the increased load sometimes fails gasoline pump. Also, it may break due to overheating when driving with a nearly empty tank, since the fuel pump is cooled.
What to do: alone can only check whether the fuel pump operates. Switch on the ignition and listen. If all goes well, then in the rear seat area for 5-10 seconds to appear buzzing sound. If the pump operates and fuel is not supplied, then hammered his mesh.
For cleaning, replacement of the filter or the fuel pump will withdraw the seat cushion, open hatch in the floor and remove pump housing. If there is no auto repair skills, it is better to contact the service.
4. diesel freezing
What's happening: engine simply will not start.
Not Suitable Season fuel diesel car strongly thickens in the cold. The composition with paraffins precipitate scoring fine filter and fuel. All this is the reason that the engine will not start.
What to do: diesel return flow. To do this, you need to warm up the car in a warm garage or fill the tank with a special additive-Antigel. After the merge or to develop the remnants of summer fuel and refuel winter.
Sometimes it is possible to manage with small losses and to warm hairdryer a fine filter under the hood.
5. Problems in the ignition system
What's happening: starter turns but the engine does not even grasp.
If no spark fuel-air mixture is ignited and, consequently, the engine may not start. The reasons are punched ignition coils or wires, as well as candles with a layer of soot or cracked insulator.
What to do: the easiest way to turn out candles and visually assess the condition of the electrodes: they must be clean and dry. Further nadsvechnik wear, make candles thread in the metal parts of the engine and rotate the starter. If the spark is there, then, with the ignition okay. If not, you need to try the other candles, and then check the wires and coils are also changing their known-good.
6. Faulty glow plugs
What's happening: the engine does not start, spiral indicator lights up on the dashboard.
At low temperatures the fuel vaporizes poorly, and without additional heating glow plugs, diesel cars can simply not start. A fault usually indicates a spiral constantly burning lamp on the instrument panel.
What to do: Candles should be removed, check and replace defective. For the test use multimeter in continuity mode. When touched, the contact probes and the central hull should sound signal.
You can also simply apply for one by one candle voltage 12 V Battery. 3-5 seconds electrode serviceable candle should warm up hot. Non-operating, respectively, remain dark.
Quick solution - try to warm up the candle a few times and then start the engine. They do not fail all at once, and if you work at least a couple, this should help.
7. sensor malfunction
What's happening: starter turns but the engine does not start. The instrument panel is lit Check Engine light.
All processes in the engine, including start-up, are managed in modern cars with computers. "Brains" read the testimony of numerous sensors, and if any of them fails, the engine operation is disrupted or blocked. This is possible due to faults crankshaft position sensor and camshaft, and the idling sensor, the coolant temperature or detonation.
What to do: identify and replace the defective unit. Unfortunately, to do so can only specialists in the service. However, in the presence of scanner ELM327 you can try to find their own damage.
8. Violation of timing
What's happening: starter turns easily and the motor does not react.
Due to incorrect adjustment or untimely replacement belt or timing chain can stretch out and jump on a few teeth, if not broken.
This inevitably leads to a violation of timing: valves are not closed at the right moment, compression and ignition of the mixture occurs. Depending on the design of the engine pistons can get to the valves and bend them, which will lead to costly repairs.
What to do: check the timing marks. If necessary, install them in accordance with the instruction manual car. For the future: Always replace the belt or chain according to the regulations and adjust properly.
9. The displacement of the flywheel ring
What's happening: starter spins idly, heard the creak and squeal from under the hood.
The teeth engage with that part of Bendix starter, made not on the disk flywheel, and a removable rim - the crown. He fitted to interference when heated and sometimes, in rare cases, can crank out. In this case, the starter regularly rotates the crown, but the flywheel and, accordingly, the engine does not spin.
What to do: remove the starter, to include the transfer of 4-5, and then, having stopped the crown with a screwdriver bit to push the machine forward or backward. If the engine will run separately from the crown, so the last should be removed and exchanged for a new one. Possibly together with the flywheel. The procedure is quite complicated and is carried out in the workshop.
10. compression insufficient
What's happening: The engine is cranked, but no signs of life.
Wear of the cylinder group increases clearances between the walls of the sleeves and the pistons, thereby greatly reduced compression. This leads to a loss of power and labored start, especially in the winter. The problem manifests itself gradually, and usually the owner of the car clue about it.
What to do: make measurements using compression device and decide on repair of the engine. No additional hardware ensure low compression can be so: to turn out candles, fill the syringe in the combustion chamber of the two Cylinder 3-4 mm³ engine oil, slightly twist the starter, and then return the candles to the place and try to make engine. If it will, obviously, the problem of wear CPG.
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