What happens if you fail emissions test twice in Arizona?
Once you get your vehicle repaired, you can retake the test. However, if you fail the second time, you may qualify for a waiver. A waiver will let you register your vehicle without having to do additional repairs and retake the test.
How long do you have to make repairs if your vehicle fails an Arizona emissions and safety test?
Your vehicle must be repaired and retested. You may receive a free retest after having your vehicle repaired if you present it for retest within 90 days of the original test date. Even though you get one free retest within 90 days of the initial test, this does not allow you to operate your vehicle with expired tags.
How many times can you fail emissions in AZ?
Waivers cannot be issued to vehicles emitting more than two times the applicable emission standard, or that have a faulty catalytic converter. A waiver cannot be issued if the vehicle’s emissions control equipment has been removed, altered or defeated.
Do you need a catalytic converter to pass emissions in Arizona?
If a vehicle does not pass an Arizona vehicle emissions test at least two times in a current test cycle. The car’s mechanical issue must be diagnosed. If a vehicle is emitting two times the applicable emission standard or has a faulty catalytic converter, a waiver cannot be issued.
What year cars are exempt from emissions in Arizona?
1967
A: All residents of the greater Phoenix and Tucson areas and those who regularly commute into the areas for work or school are required to have their 1967 or newer vehicles pass an emissions test. Most vehicles newer than 6 years old are exempt from testing, and certain other vehicle exemptions apply (see Exemptions).
What happens when a car fails the NOx test?
The car has failed the NOX portion of its emissions test. This is probably the most common failure I’ve seen, but that term on the emission test seems to scare people. But it is usually an easy failure to fix. The following description may seem to go against logic at first, but it does explain what is actually happening to make your car fail.
Why does a lean fuel mixture cause high NOx?
A lean fuel mixture exists when less fuel then required is delivered to the combustion chambers or when more air then necessary is added to the fuel. In either case the lack of gasoline needed to cool the combustion chambers down is not present. Combustion temperatures increase causing high nitric oxide emissions.
What do you need to know about NO x emissions?
Keep a copy of all data and results from the initial and from the most recent NO X emission rate testing, including the values of quality assurance parameters specified in section 2.3 of appendix E to this part. Explain how the daily assessment procedures specific to the alternative monitoring system are to be performed.
What can be done about high NOx in smog?
The solution to this problem is called De-Carbonizing. It usually costs around two labor hours at a smog check repair station. It will remove a good amount of carbon out of an engine. This will increase combustion space, lower compression and lower NOx. 5. Engine Overheating – Inadequate engine cooling can will high NOx.