Why is the car emitting smoke when going uphill?
1 Answers
When a car emits smoke while going uphill, it can be categorized into three types: black smoke, white smoke, and blue smoke. Below are the related causes: 1. Black smoke emission: The phenomenon of black smoke emission is more common in carburetor-equipped vehicles. This occurs because the fuel injection in carburetor models is not controlled by a computer but by the accelerator pedal. In some cases, excessive fuel enters the cylinder and is expelled before it can be fully burned, resulting in black smoke. 2. White smoke emission: White smoke may be caused by wear in the engine cylinder's gasket, creating a gap that allows a significant amount of coolant from the cooling system to enter the combustion chamber. Since water cannot burn, it turns into steam when heated and is directly expelled through the exhaust pipe. 3. Blue smoke emission: Blue smoke is often due to internal engine faults that cause engine oil to enter the combustion chamber and burn. There are generally two common scenarios: scratches on the cylinder walls or poor piston sealing or severe wear at the valve, all of which create gaps. The engine oil, originally meant for lubrication, enters the combustion chamber through these gaps and burns. When the unburned oil is expelled, it produces thick blue smoke.
