How To Fix Excessive Subaru Exhaust Gas

Subaru is a popular car brand known for its reliability and durability. However, like any car, Subarus can experience issues over time. One common problem Subaru owners may encounter is excessive exhaust gas. Excessive exhaust gas can be a sign of a problem with your car, and it’s important to address it to prevent further damage. In this article, we’ll discuss how to fix excessive Subaru exhaust gas.

What Causes Excessive Exhaust Gas in Subarus?

Excessive exhaust gas in Subarus can be caused by a variety of issues, including:

  1. A faulty oxygen sensor: The oxygen sensor measures the amount of oxygen in the exhaust gas and sends this information to the car’s computer. If the oxygen sensor is faulty, it can cause the car to run rich, which results in excessive exhaust gas.
  2. A clogged air filter: The air filter removes contaminants from the air that enters the engine. If the air filter is clogged, it can restrict airflow and cause the engine to run rich, which can lead to excessive exhaust gas.
  3. A malfunctioning catalytic converter: The catalytic converter converts harmful gases in the exhaust into less harmful gases. If the catalytic converter is malfunctioning, it can cause excessive exhaust gas.
  4. A leak in the exhaust system: A leak in the exhaust system can cause excessive exhaust gas. The leak can be caused by a damaged exhaust pipe or a loose connection between components.

How To Fix Excessive Exhaust Gas in Subarus

Here are some steps you can take to fix excessive exhaust gas in your Subaru:

  1. Check the oxygen sensor: If you suspect the oxygen sensor is faulty, have it checked by a mechanic. A faulty oxygen sensor can be replaced relatively easily.
  2. Replace the air filter: Check the air filter and replace it if it’s clogged. A clean air filter allows for proper airflow to the engine and can help prevent excessive exhaust gas.
  3. Inspect the catalytic converter: If you suspect the catalytic converter is malfunctioning, have it inspected by a mechanic. A malfunctioning catalytic converter will need to be replaced.
  4. Check for leaks: If there’s a leak in the exhaust system, it will need to be repaired or replaced. Have a mechanic inspect the exhaust system for leaks.

Preventing Excessive Exhaust Gas in Subarus

Preventing excessive exhaust gas in your Subaru involves regular maintenance and care. Here are some tips:

  1. Regularly check and replace the air filter: The air filter should be checked and replaced regularly, usually every 15,000-30,000 miles.
  2. Use the correct fuel: Use the recommended fuel type for your Subaru. Using the wrong fuel can cause the engine to run rich, leading to excessive exhaust gas.
  3. Follow the recommended maintenance schedule: Follow the recommended maintenance schedule for your Subaru to ensure that all components are functioning properly.
  4. Address issues promptly: If you notice any issues with your Subaru, such as a check engine light or excessive exhaust gas, address them promptly to prevent further damage.

Conclusion

Excessive exhaust gas in your Subaru can be a sign of a problem with your car. It’s important to address the issue promptly to prevent further damage. Excessive exhaust gas can be caused by a faulty oxygen sensor, a clogged air filter, a malfunctioning catalytic converter, or a leak in the exhaust system. Regular maintenance and care can help prevent excessive exhaust gas in your Subaru.