The car accelerates badly

So in the engine compartment there are nodes, the malfunction of which affects the dynamics of the car.



There are many reasons for the deterioration of the dynamics, the main ones can be defined as follows.

1. Engine malfunction - a decrease in compression in one or more cylinders, suction of additional air into the engine intake tract. Coking of the exhaust system or damage to the exhaust gas converter.

2. Malfunction of the power system - clogging of the nozzles, fuel filter and hoses of the fuel supply system. Insufficient fuel pump supply. Use of low quality fuel.

3. Malfunction of the ignition system - failure of the spark plug, breakdown of the high-voltage circuit of the system.

4. Malfunction of the engine management system - failure of the system sensors. If any sensor fails, the electronic control unit switches to work according to a backup program that allows you to get to a garage or car service, but the power and economic characteristics of the engine are reduced.

5. Malfunction of the variable valve timing system - failure of the solenoid valves or the system control unit.


6. Clutch slip due to wear or malfunction of the elements of the hydraulic drive to turn it off.

7. Malfunction of the brake system - braking of one or more wheels on the move, incorrect adjustment of the parking brake.

8. Insufficient tire pressure.

9. Car overload.

A complete diagnosis of the car should be carried out by highly qualified craftsmen using special diagnostic equipment, so contact a car service.

You can independently carry out the following work.

1. Check and adjust the air pressure in the tires.

2. Check the operation of the service brake system and parking brake. It is not necessary to remove the wheels for this. Find a flat section of the road and in dry, calm weather, conduct a ride to determine the run-out of the car. The car must be fully fueled, only the driver is in the cabin. Accelerate the vehicle to 50 km/h, level off the speed, and then disengage the gear and coast to a complete stop. Make another run in the opposite direction. The overrun should be about 500 m.

3. Check the operation of the ignition system as described above.



4. Check clutch operation. The initial check is carried out on a flat, obstacle-free area. Set the accelerator pedal to an increased idle speed of about 1500 min^-1. Brake the vehicle with the parking brake. Depress the clutch and shift into 1st gear. Then begin to slowly release the clutch pedal. If the engine stalls, the clutch is working and not slipping. If the engine does not stall, the clutch is worn and needs to be replaced.