What Causes Smoke from the Parking Heater?
2 Answers
Reasons for smoke from the parking heater: 1. Carbon deposits: Commonly found in the combustion chamber of the parking heater, the ignition performance of the igniter decreases, and there is a large amount of carbon buildup on the fuel injection device, resulting in incomplete combustion of excess fuel; 2. Excessive fuel injection: The fuel injector supplies too much fuel, or the fuel injection device is damaged, leading to incomplete combustion of the fuel; 3. Poor fuel quality: Since the parking heater system does not finely control the air-fuel mixture ratio like the engine does during operation, if the fuel quality is too poor or contains too many impurities, it will directly affect combustion; 4. Too much fuel: Incomplete combustion, adjust the fuel injection amount of the fuel pump.
I remember last winter when my car's parking heater started smoking, it really scared me. I was sitting in the driver's seat waiting for a friend, with the heater on and feeling quite comfortable, but soon white smoke started coming out from outside. Later, the mechanic told me this was mainly due to incomplete combustion—when the system starts, the fuel doesn't burn completely, carbon deposits clog the exhaust pipe, or uneven fuel pumping causes it. If maintenance is neglected for a long time, accumulated dust can easily lead to such smoking, especially in high-humidity environments. I had ignored regular checks back then and ended up spending unnecessary money on part replacements. I recommend stopping immediately to check the exhaust pipe and fuel supply if you encounter this issue, to avoid smoke accumulating in the cabin and affecting health. Experienced drivers often say that parking heater issues are no small matter—smoke is a warning sign, and you should seek professional repair right away instead of delaying and ruining your driving mood.
