Coolant Leak: If the combustion chamber gaskets or cylinder heads are damaged, engine coolant can leak into the combustion chambers, causing white smoke to be emitted from the exhaust.
Blown Head Gasket: When a head gasket fails, combustion gases and other fluids can escape from the engine into the exhaust, leading to white or gray smoke.
Cracked Cylinder Head or Block: These faults can allow oil and coolant to go into the combustion chamber and the exhaust, causing white smoke to be produced.
Fuel Injector Issue: Incorrectly operating fuel injectors can result in too much fuel getting into the combustion chamber. The surplus fuel can't burn completely, forming white smoke.
Bad PCV Valve: Faulty positive crankcase ventilation (PCV) valves cause excessive crankcase pressure, leading to oil leaking past seals and forming white exhaust smoke.
Excessive Condensation: During cold weather, white exhaust smoke can be normal as it may just be water vapor from the condensation of moisture. However, if it persists or you notice other symptoms, further inspection is needed.
Note: Since smoke color alone can be misleading, it is suggested to take the vehicle to a trusted mechanic for accurate diagnosis and proper repairs.
