Emission test what is

Some states offer a free retest if your vehicle fails an initial emissions test. In the states that require emission testing, your vehicle must be repaired to meet emission standards. Repair assistance to low income earners is available in some states. Many mechanical problems can cause a vehicle to emit excess pollutants. For example, a faulty fuel injection can lead to a rich fuel mixture too much fuel, not enough air.

Rich fuel mixtures tend to lead to high carbon dioxide levels. The air injection system forces fresh air into the exhaust. If this system fails, emissions testing may detect high levels of hydrocarbons or carbon monoxide. Other problems that can lead to emissions testing failure are oxygen sensor malfunction, ignition system defects, and vehicle vacuum leaks.

Those are the only two outcomes of an emissions test. If you pass, great! But what if your vehicle fails? But when you visit Jiffy Lube for your emissions test, you can rely on a trained technician to explain where and what the problem is and how to correct it.

Rest assured, no work will be done on your vehicle without your approval. With more than 2, locations across North America , a Jiffy Lube service center is likely nearby, ready to perform the vehicle maintenance that will help keep your vehicle operating as engineered. Please note: Not all services are offered at all Jiffy Lube locations. Please call ahead or check the jiffylube. Posted under Car Inspection. Sometimes referred to as smog checks, emissions testing measures the level of pollutants — including hydrocarbons, oxygen, carbon monoxide, and oxides of nitrogen — present in vehicle exhaust.

Data protection declaration Legal notices. With over 95 years of experience in vehicle inspection and an international presence in 20 countries, DEKRA is the world leader in testing vehicle emissions, helping to protect both road users and the environment worldwide. DEKRA provides customers with emission checks which are often combined with a thorough safety inspection of a vehicle. DEKRA emission tests ensure that the exhaust emissions of the vehicles over the vehicle lifetime meet the reference values.

This reference is in most of cases the level the vehicle had at the homologation date. DEKRA experienced vehicle inspectors can inspect all road vehicles accurately with state-of-the-art equipment and the highest-quality processes. These measures may also be completed with an electronic check via on-board diagnostics.