The engine won't start — what should i do? (Nissan Murano Z50)

If the motor shaft does not rotate or rotates slowly

• Make sure the control lever is in position N or P.
• Check that the battery terminal clamps are securely fastened and that they are clean.
• Turn on the interior lighting. If it does not light up, or lights up dimly, or goes out when the starter is engaged, the battery is discharged.

The engine can be started using an external battery, but do not tow or push the vehicle. The automatic transmission (variator) may fail.

If the engine shaft rotates at a normal speed, but the engine does not start

• Check the fuel level.
• Check all butt connections at the ignition coils and spark plugs to ensure they are securely seated.
• If the engine is warm or there is a smell of unburned fuel, the engine has probably received too much fuel.

Starting the engine from the second car ("lighting up")

When performing this operation, the following must be taken into account:

• The cross-section of the wire providing the starting must be at least
• 16 mm² (diameter about 5 mm). The determining factor in this case is always a car with a discharged battery. The cross-section of the wire is usually indicated on its packaging. When purchasing a new jumper cable, choose a cable with insulated terminals and a cross-section of 25 mm², as it is also suitable for engines with a smaller displacement.
• Both batteries must have a voltage of 12 V.
• A discharged battery can freeze at temperatures as low as -10°C. Before connecting the jumper cable, be sure to defrost the battery.
• The discharged battery must be properly installed in the vehicle.
• Place both vehicles so far apart that there is no metal-to-metal contact between them. Otherwise, voltage may arise when connecting the positive terminals.
• Apply the parking brakes on both vehicles. Set the gearshift levers to neutral position.
• Turn off all power consumers.
• The engine of the vehicle supplying voltage (A) must be idling.

[The publication is reprinted from this resource: Nissanbook.ru]

• Jumper cables must be connected in the following sequence:

♦ Clamp the red cable to the positive terminal of the discharged battery;

♦ Clamp the other end of the red cable to the positive terminal of the battery that supplies voltage;

♦ Clamp the black cable to the negative terminal of the battery that supplies voltage;

♦ connect the other end of the black cable to a well-cleaned area, for example, to the engine body of the car being started. This will help avoid losses in the "mass".

Caution: Connecting the cable to the negative terminal of an empty battery may cause an explosion.

• Check the battery terminal connections again for tightness. Make sure that the cables do not come into contact with rotating parts such as the radiator fan.

Caution: The cable terminals must not touch each other or come into contact with "ground" (body or chassis).

• Start the engine of the car with the dead battery and leave it running. When starting, turn on the starter for no more than 1.5 seconds, since with high current the cable and terminals heat up. For this reason, it is necessary to take cooling pauses lasting at least 1 minute.
• Set the engine of the vehicle providing the starting system to idle speed. As a result, it will be possible to avoid possible damage to the generator when starting with peak voltages. If the idle speed decreases, you can add a little gas.
• Do not allow open flames near the battery when starting, as it produces flammable gases.
• After starting, disconnect the cables in reverse order.

Caution: If the above connection recommendations are not followed, there is a risk of electrolyte burns. In addition, injuries may occur if the battery explodes, and damage may occur to the electrical systems of both vehicles.

Bleeding the fuel system

If the fuel tank has been completely emptied and the engine has stopped, the engine may not start after refueling. Then you need to turn the ignition on several times for 5-10 seconds and turn it off.

If the engine is too hot

If the coolant temperature gauge shows that the engine is overheating, if you notice a loss of power, or if you hear a distinct knocking noise (detonation), then the engine is too hot.

• Stop the vehicle, let the engine idle, and apply the parking brake. Turn off the air conditioner.
• If coolant is leaking or steam is coming from the radiator or coolant expansion tank, turn off the engine, open the hood and wait for the steam to clear. If neither steam nor liquid comes out, do not turn off the engine and check whether the cooling system fan is working. If not, then turn off the engine and turn off the ignition.
• Check the radiator, radiator hoses and underside of the vehicle for leaks. It is acceptable for water to drip from the air conditioner after use.
• When the engine is running, be careful not to place your hands or clothing near the moving fan or drive belts.
• If no coolant leak is detected, check the coolant expansion tank. If it is empty, add water to the reservoir until it is approximately half full while the engine is running.

Caution: Never attempt to remove the radiator cap if the engine and radiator are hot.

• After the engine has cooled to normal temperature, check the fluid level in the reservoir again. If necessary, fill the tank halfway. A significant loss of coolant means there is a leak in the cooling system.