3.7. The car badly accelerates

Knots which malfunction influences dynamics of the car are so located in podkapotny space.
There is a lot of reasons of deterioration in dynamics, the main can be defined so.
1. Malfunction of the engine — decrease in a compression in one or several cylinders, a suction of additional air to the inlet highway of the engine. Coking up of system of release or damage of converter of the fulfilled gases.
2. Malfunction of a power supply system — a contamination of nozzles, the fuel filter and hoses of a fuel supply system. Insufficient giving of a gasoline pump. Use of low-quality fuel.
3. Malfunction of system of ignition — failure of a spark plug, breakdown of a high-voltage chain of system.
4. Malfunction of a control system of the engine — failure of sensors of system. At failure of any sensor the electronic control unit passes to work on the reserve program allowing to reach to a garage or car service, but in this case power and economic characteristics of the engine decrease.
5. Pro-slipping of coupling owing to wear or violation of adjustment.
6. Malfunction of the brake system — snubbing of one or several wheels during the movement, the wrong adjustment of the parking brake.
7. Insufficient pressure of air in tires.
8. Car overload.
Highly skilled masters with use of the special diagnostic equipment therefore address to car service have to carry out full diagnostics of the car.

It is independently possible to carry out the following works.
1. Check and bring to norm air pressure in tires.
2. Check operation of the working brake system and parking brake. It is for this purpose optional to remove wheels. Find the flat section of the road and to dry windless weather carry out arrival on definition of a vybeg of the car. The car has to be completely filled, in salon only the driver. Accelerate the car to 50 km/h, level speed, and then switch off transfer and move by inertia to a full stop. Make one more arrival in the opposite direction. Выбег has to make about 500 m.
3. Check work of system of ignition as it is described above.
4. Check coupling work. An initial inspection is carried out on the platform, flat, free from obstacles. Establish by a pedal of an accelerator the increased frequency of rotation of a bent shaft in the idling mode — about 1500 min.-1. Slow down the car the parking brake. Squeeze out coupling and include the I transfer. Then begin to release a coupling pedal smoothly. If the engine decays, coupling is correct and does not slip. If the engine does not become deaf, coupling is worn out and demands replacement or adjustment of the drive of switching off.

Technique of adjustment of the drive of switching off of coupling you will find "Maintenance" in section 4 (see. "Check and adjustment of the drive of switching off of coupling").