Why Did My Car Fail Emissions? Most Common Reasons

If you own a vehicle in Maryland, you’ll need to take the vehicle in for emissions testing to ensure that the car is not a danger to the environment. If the car fails emissions, you must make repairs to the vehicle that improve its environmental impacts in order to register that vehicle. There are many reasons why you may fail an emissions test and need maryland vehicle emissions repair. The most common reasons for emissions test failure include:

·    Faulty Oxygen Sensor: A faulty oxygen sensor is a common reason for emissions failure. This sensor measures the available oxygen present in the exhaust gas. There are many things that can cause this problem but it is usually an easy repair.

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·    Vehicle Vacuum Leaks: Vacuum leaks are usually caused by a MAP sensor working improperly. This sensor measures the internal combustion of the electronic control system in the engine. If it leaks, it poses a great danger.

·    Defective Ignition System: Hydrocarbons detected in the ignition system cause emissions testing failures. You should properly maintain the ignition system to avoid such a problem. High HC levels are oftentimes caused by worn out spark plugs and spark plug wires, timing issues, and problems with the distributor cap.

·    Rich Fuel Mixture: Rich fuel mixture is responsible for high CO2 levels in the fuel. It is generally caused by a weak ignition producing high carbon monoxide levels. Leaking fuel injectors, contaminated oxygen sensors, and many other cause of rich fuel mixture exist but a professional can find and repair the problem quickly.

Failing emissions testing is frustrating but do not panic. Instead, get in touch with an expert who can repair any of the above problems or others that cause your vehicle to fail the test. After the experts are on the job, you can rest assured your vehicle will pass emissions the next time around.