Exhaust Fumes: Where They Come From and How to Reduce Them

  • By Morgan Gertler
  • 28 Aug, 2017
Car exhaust is a fact of life, though strong emissions control regulations have vastly reduced the amount of exhaust that modern cars generate. Most of the time, you will not particularly notice the exhaust coming from your car. When your car exhaust develops a nasty smell, though, it is a sign of trouble. Rotten eggs, cloying sweetness, and gasoline are the most common smells that car exhaust can develop. Regardless of the exact smell of your car’s exhaust fumes, it is important to address the issue before further engine problems develop. Fortunately, there are several specific measures that can help.

Oil and Oil Filter

When your engine oil gets old, it begins to thicken and become weighed down by dirt and debris, turning into a sludge that does not properly lubricate the engine. Oil burning becomes irregular, engine performance is compromised, and excess exhaust fumes can result.

The oil filter removes debris before oil passes through the engine. When it becomes clogged, though, even fresh, new oil can get stuck. This also compromises engine performance and leads to increased exhaust fumes.

Air Filter

Air that enters your engine can also introduce dust, debris, and dirt. The air filter traps these particles, helping to keep the engine clean. Like the oil filter, if the air filter is clogged, increased exhaust fumes can result.

PCV Valve

Ultimately, the PCV (positive crankcase ventilation) valve is in control of the engine emissions. As it ages, the PCV valve tends to build up a layer of sludge, consisting of old oil and debris. This prevents it from doing its job of lowering emissions, allowing an excess of exhaust fumes to escape.

Fuel Filter

The fuel filter is responsible for cleaning dust and debris out of your car’s gasoline before it is distributed to the vehicle’s engine. Like the other filters in your car, it can become clogged over time. This allows debris to get into the engine, causing it to burn excess fuel and raising the level of exhaust that is released.

Exhaust fumes can come from many different parts of your car’s engine and filtration systems. All of these issues are simple to fix early on, but can lead to increased problems, including engine damage, as time moves on. Therefore, if you begin to notice increased or odd-smelling exhaust fumes, it is important to have your car checked out by a qualified technician as soon as possible. Not only is it better for the environment to minimize your vehicle’s emissions, it is also better for your fuel mileage and ultimately the overall lifespan of your car.
If you are tired of getting the runaround and being treated like you haven’t got a clue, we invite you to try Colchin Automotive instead. Give us a call at 303-431-5421 for all of your automotive needs!

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