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How to Fix Black Smoke from Exhaust of Car

Auto Repair

Black smoke from the exhaust of the car is the result of a clogged air filter, bad fuel injector sensor. How to fix black smoke from the exhaust of the car?

Black smoke from the exhaust of the car comes out while driving. The possible reasons for black smoke from the exhaust are a clogged air filter, bad fuel injector sensor (throttle position sensor, coolant temperature sensor, and mass airflow sensor).

How to fix black smoke from the exhaust

Clogged air filter

Black smoke that comes out of the exhaust is an indication of too much gas burned inside the engine combustion chamber. The most common reason why there is black smoke from the exhaust is the clogged air filter. When the air filter is clogged, enough air will be restricted from going inside the engine, making the air/fuel reach (too much fuel with not enough air).

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White Smoke From Exhaust
If there is white smoke that comes out from the exhaust while the engine was running at any engine temperature like when it's cold, warm, or hot then it means that there is a problem with the engine.
Learn more: White Smoke From Exhaust

Open the hood of the car and locate the air filter, refer to the manual covering the vehicle model if you have difficulties finding the air filter. Remove the air filter and examine closely if there is too much dirt present on the filter, if there is too much dirt then this is what restricts replacement parts from going inside the combustion chamber that is why the air is insufficient and the fuel is too much.

Replace the air filter. This should fix the problem. Any auto parts have an air filter for their inventory, so there is nothing to worry about where to find replacement parts.

Bad Fuel Injector Sensor

This problem is only possible for cars with fuel injection systems. Usually, the problem for this system is the electronic sensors that measure various engine factors in which the car computer system is used for calculating the amount of fuel that must be injected into each engine cylinder. If one of the sensors is faulty then the wrong data will be sent to the car computer and the air/fuel mixture will be wrong which in this case the fuel is too rich.

There are three sensors that when faulty can cause black smoke, sensors are throttle position sensor, engine coolant temperature sensor, and the mass airflow sensor.

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There is only one way to determine if the sensor is faulty, this is to hook up the car to an engine analyzer. The engine analyzer will display trouble codes that can be used to determine if the sensor is the problem. With that said, bring the car to a reputable car shop to have the engine analyzed with an engine analyzer. This kind of job is costly. If one of the sensors is bad, just replace the sensor to fix the problem of black smoke.

Blue Smoke from Exhaust of Car
Blue smoke from the exhaust means the engine is burning oil. What's causing this engine to burn oil? might be bad rings, bad valve steam seals. Read more » Blue Smoke from Exhaust

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