The situation when the car treacherously silent when turning the key in the ignition lock is familiar to many drivers. A discharged battery, a faulty starter or just a dead battery after a night out in the cold can make the trip a problem. In such cases, the only way out is often to start the engine by a forced method, popularly known as “pusher”.
This method is based on simple physics: if you spin the crankshaft of the engine to a certain speed, the cylinders will start to receive fuel, the spark will ignite the mixture, and the engine will work on its own. However, the efficiency and safety of the procedure directly depend on the type of transmission and the condition of the car components.
It is important to understand that trigger-off This is an extreme measure, not a regular mode of operation. Incorrect actions can lead to serious damage to the catalytic converter, ignition system or even the gearbox itself. Before proceeding to active actions, it is necessary to assess the situation and technical capabilities of your vehicle.
Principle of operation and transmission limitations
The essence of the method is to rotate the crankshaft at the expense of the wheels of the car. When the machine is coasting, the gear on transmits torque from the wheels through the gearbox to the engine. As soon as the revolutions reach a value sufficient for compression and spark formation, fuel-mix.
It is important to know that this method is suitable only for cars with a manual transmission (MHC). Owners of machines with automatic transformer boxes (ATMs), CVTs or robotic systems with one clutch should refrain from such experiments.
Automatic boxes do not have a rigid connection between the wheels and the engine when the engine is not working, since the hydraulic transformer cannot transfer the force in the opposite direction without oil pressure. Trying to start machine With the pusher can lead to overheating of the oil and failure of the frictions.
What happens if you push the machine?
Attempting to start the engine on a car with automatic transmission from a pusher will lead to the fact that the oil in the box will not circulate at the desired speed, which will cause dry friction and overheating of parts. In addition, the electronics of modern cars block the supply of fuel in the event of a non-working starter.
There are rare exceptions to some older automatic transmission models where the manufacturer allowed tow to launch, but in modern conditions it is more of a risk than a help. If you have a machine, it is better to use wires for “lighting” or call a tow truck.
- 🚗 Mechanics (IPPC): It is ideal for launching from a pusher, as it has a rigid mechanical connection.
- ⚙️ Automatic (AV) It is not recommended, high risk of breakdown of the hydraulic transformer.
- 🔄 CVT: It is forbidden, the belt may not withstand a jerk load or slip.
- 🤖 Robot (DSG, AMT): Not recommended due to the complexity of control of clutch electronics when the engine is off.
Preparation of the vehicle and assessment of conditions
Before starting the procedure, you need to make sure that the situation really allows you to use this method. First, check the oil level in the engine. If oil-pump will not lubricate rubbing vapors from the first seconds of rotation, this can lead to bullying in the cylinders and expensive repairs.
Make sure there is fuel in the tank. Sometimes drivers forget that the gas pump may not work with a discharged battery, but in older carburetor models, the fuel comes by gravity, and in injection pumps, the residual charge may work or require the ignition to be turned on.
Evaluate the traffic situation. You will need a flat section of road with a hard surface or the help of another car. It is strictly forbidden to start the car from the pusher on a slippery road (ice, snow, dirt), as the wheels will stall, and transfer torque to the engine will not work.
⚠️ Attention: Before starting the movement, be sure to turn on the alarm to warn other road users that your car is moving in a non-standard way.
It is also worth checking the serviceability of the brake system. Since the engine is not running, the brake booster (vacuum) will not create additional pressure and the brake pedal will become very tight. Stopping the car will have a significant leg effort.
☑️ Pre-launch checks
Equipment and assistants required
For a successful launch from a pusher, one driver is often not enough, especially if we are talking about a heavy SUV or a car with a large engine capacity. The best option is to have one or two physically strong assistants.
If there are no people nearby, you can use the method of descending from the mountain or towing another car. In the second case, it will be necessary tow-line Or a hard clutch. The length of the cable should be at least 4-5 meters so that the pusher has the opportunity to disperse and maneuver.
When using the cable, make sure it is intact. A cable break at speed can injure people or damage the body of both cars. Hooks must be securely secured in the regular towing eyelets.
- 👥 Assistants: 1-2 people for pushing or a second car for towing.
- 🪢 Table: Reliable, from 4 meters long, without damage.
- 🔑 Keys: Just in case, take the keys to all the locks to quickly open the doors or hood.
- 🧤 Gloves: Protect your hands when working with a cable or pushing the body.
If you use the slope descent method, make sure there are no obstacles, restricted-visibility corners or heavy-traffic intersections at the end of the descent. The inertia of a heavy car without working brakes with an amplifier is extremely difficult to control.
Step-by-step engine start instruction
The start-up process requires clear coordination between the driver and the assistants. First, sit behind the wheel, turn on the ignition, so that the instrument panel lights up and the gas pump is earned. Make sure the steering wheel is unlocked.
Press the clutch pedal to the end and turn on the second gear. The first gear can create too much drag and the wheels will start to stall, and the third will require too much speed to start successfully. The second transmission is the “golden middle”.
Give the assistants a signal to start pushing the car. As soon as the car reaches the speed of the pedestrian (about 5-7 km / h), it is necessary to smoothly but quickly release the clutch pedal. At this point, you will feel a characteristic jerk - the engine will begin to scroll.
If the engine "captures" but stalls, do not release the clutch completely immediately. Try to work the pedal in a semi-squeezed state, balancing between engine speed and car speed.
Once the engine starts, immediately squeeze the clutch again so that the car does not burst forward, and give the assistants a signal to stop. Do not shut down the engine immediately, let it work at idle speeds to charge the battery.
Algorithm of action:1. Turn on the ignition.
2. Squeeze the clutch.
3. Turn on gear 2.
4. Disperse the car.
5. Smooth release the clutch.
6. At start-up, squeeze the clutch and add gas.
The most critical moment is the synchronization of the release of the clutch and the moment when the car has gained sufficient inertia. Too early release will slow down the car, too late will not spin the engine.
Comparison of launch methods and their effectiveness
There are several variations of emergency start, and the choice of method depends on the specific conditions. Below is a table comparing the effectiveness of different approaches.
| Method | Resources required | Efficiency | Risks. |
|---|---|---|---|
| With the help of men | 2-3 people | Average (depending on the weight of the car) | Back injuries, low speed |
| Downhill. | Slanting the road | Tall. | Loss of control, road accident |
| Towing | Second car, cable. | Very high. | Tie break, back kick |
| Launcher | Booster (Power Bank) | Maximum | No (the safest method) |
Use of external launcher Today, the most civilized way. It is a compact lithium-polymer battery that connects to the terminals and allows you to start the engine with a regular starter without the need to push the car.
The method of towing by another car is most effective for heavy vehicles, but requires a second driver and a serviceable cable. Descent from the mountain is good because it does not require people, but it is dangerous in conditions of urban traffic.
⚠️ Attention: Never try to start the car with a pusher in reverse. This can lead to breakage of stop lights, damage to the transmission and create an emergency situation on the road.
Typical errors and security measures
One of the most common mistakes is to try to start the engine in high gear. The third or fourth gear requires a speed of at least 20-30 km/h, which in a city or narrow road can be unsafe.
Another mistake is ignoring the engine heat. After a successful launch, you should not immediately give high speeds or go at high speed. The engine and transmission need time to disperse the oil throughout the system, especially if the start was made in the cold season.
Don't forget. catalytic converter. When starting from the pusher, a large amount of unburned fuel can get into it, which will burn out inside the catalyst, causing it to overheat and melt the honeycombs. Try not to keep the gas pedal squeezed out too long until the engine is running smoothly.
- 🚫 Don't tow. A car with the ignition turned off - this will block the steering.
- 🛑 Don't let go. clutching sharply - this can lead to a jerk and collision.
- 🔥 Watch out. the engine temperature immediately after starting.
- 🔋 Check it out. The battery after the trip may need to be replaced.
If after several attempts the engine does not start, perhaps the problem is not in the battery, and in the system of ignition or fuel supply. Continuing to try can permanently land the battery or damage the starter (if you spin the key in parallel).
Can I start the injection engine from the pusher?
Yes, modern injection engines can be started from a pusher, but there is a nuance. The electronic control unit (ECU) and the gas pump require minimal voltage. If the battery is completely dead (0 volts), the pump may not turn on the injectors. If there is any residual charge, the method will work.
Is it harmful to start the car from the pusher for the engine?
For the engine itself, this does not cause critical harm if the oil level is normal. The main blow is taken by the clutch (the discs experience friction when slipping) and the catalytic converter due to the possible ingress of unburned fuel. Frequent use of this method reduces the clutch life.
What if the car does not start with the pusher?
If after 3-5 attempts there is no result, check whether there is a spark, whether fuel is supplied, whether the car is removed from the alarm (engine lock). Also, the reason may be a malfunction of the crankshaft position sensor, without which the ECU will not give a command to inject.
Do I need to squeeze the gas when starting from the pusher?
On injection engines, it is usually not necessary to squeeze gas before starting, and even harmful, since the system itself will determine the “cold start” mode. Old carburetor machines sometimes required a slight opening of the throttle, but modern systems do not need this.
How long do I have to drive after starting from the pusher?
It is recommended to travel at least 30-40 minutes in the mode of the track (without frequent stops) so that the generator has time to restore the battery charge. Short trips around the city may not have time to charge the battery, and in the evening you will again face the problem of starting.