Browse

Property For Sale Property For Rent

Used Cars Others

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Others Pet Supplies Sporting Goods Ticket Toys Games Transportation

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What is Emission Exceedance?

2 Answers

ElenaAnn

09/06/25 8:22am

Emission exceedance refers to the situation where motor vehicle exhaust emissions exceed specified standards, causing severe air pollution. The following are the reasons for emission exceedance: 1. Vehicle aging. 2. Failure of the three-way catalytic converter. 3. Abnormal engine operation. Below is extended information on exhaust treatment methods: 1. Tighten the exhaust outlet with a balloon to collect the exhaust. 2. Use an alcohol blowtorch or alcohol lamp to burn the exhaust, converting it into carbon dioxide. 3. Utilize a solution to absorb the exhaust. 4. Perform an oxidation-reduction reaction between copper oxide and carbon monoxide, connecting a tube to a test tube for repeated use of carbon monoxide.

Was this review help?

8

5

Share

RobertAnn

09/18/25 7:57am

Emission exceedance actually means failing the tailpipe test, which I've encountered several times. It's usually because the catalytic converter in the car is broken or clogged. It's responsible for converting harmful gases into harmless ones. If it's clogged, the CO or NOx levels will rise. Another issue could be the aging or malfunctioning oxygen sensor, which tells the computer how much to adjust the air-fuel mixture. If it fails, the fuel won't burn completely, leading to excessive emissions. Additionally, dirty spark plugs or faulty ignition coils can cause incomplete combustion, resulting in more exhaust gases. During inspection, you can use an OBD scanner to read the trouble codes. For example, P0420 indicates low catalytic converter efficiency. A simple cleaning might solve the problem, but in severe cases, you'll need to replace the part. It's recommended to change the air filter and engine oil every 20,000 kilometers to prevent carbon buildup and worsening the issue.

Was this review help?

16

2

Share

Expand All

More Forum Discussions

Does Insurance Cover Car Spontaneous Combustion?

If the car has spontaneous combustion and you have purchased auto damage insurance, the insurance will cover the claim. Below are the specific details of auto damage insurance: 1. Coverage: Auto damage insurance generally covers vehicle losses caused by collisions, falls, spontaneous combustion, fires, explosions, storms, heavy rain, mudslides, landslides, etc. It also includes necessary and reasonable rescue expenses paid by the insured to prevent or reduce the loss of the insured vehicle after an insurance incident. The insurance company is responsible for claims within the scope of liability. 2. Main Coverage: Generally refers to auto damage insurance, including no-deductible insurance, spontaneous combustion insurance, glass insurance, water damage insurance, third-party liability insurance, and scratch insurance. Auto damage insurance mainly covers vehicle damage caused by insured incidents to the insured vehicle.

What Causes the Wrench Light to Illuminate in a CR-V?

CR-V wrench indicator light illuminates to remind the owner to perform vehicle maintenance. Below is relevant information about vehicle maintenance: 1. Minor Maintenance: Minor maintenance generally refers to routine maintenance tasks performed at intervals specified by the manufacturer in terms of time or mileage to ensure vehicle performance. It mainly includes changing the engine oil and oil filter. The timing of minor maintenance depends on the effective duration or mileage of the engine oil and oil filter used. 2. Major Maintenance: Major maintenance refers to routine maintenance performed at intervals specified by the manufacturer in terms of time or mileage, involving the replacement of engine oil, oil filter, air filter, and fuel filter.

Should You Use a Car Cover or Not?

It depends on the specific situation and should be handled according to individual needs: 1. If the car is parked outdoors (frequently exposed to sunlight) and driven infrequently, it is necessary to cover the car with a car cover. It helps to some extent in preventing dust, rain, snow, and contamination from debris (such as insect resin, bird droppings, etc.), reflecting sunlight, delaying the oxidation and discoloration of the paint, and protecting the paint. 2. When purchasing a car cover, it should be vehicle-specific (properly sized) to prevent it from being too large (loose), avoiding friction against the paint due to wind movement. 3. Before covering the car, clean the paint and any surface dust or debris to prevent them from rubbing against the paint.

Why does the QINGLING ISUZU 100P gearbox make abnormal noises?

1. The engine makes abnormal noises. There are many possible reasons for abnormal noises in the engine compartment. Most people determine the source of the noise based on the sound, which is usually a sharp metallic sound or a wind-like noise. 2. The gearbox makes abnormal noises. If there is a "rustling" sound inside the gearbox while driving, but it disappears when the clutch or accelerator is pressed, and a whistling-like sound occurs during gear shifting. 3. Wear causes abnormal noises. When pressing the accelerator or brake while driving, there are always some abnormal noises from certain parts of the car body. The sound is not loud and does not affect normal driving.

What are the possible reasons for the non-responsive ignition button of the Landwind X7?

Landwind X7 ignition button not responding could be due to insufficient fuel pressure. The following are the related reasons: 1. Insufficient fuel pressure: The car has too little or no fuel, resulting in insufficient fuel pressure, and no response when starting the car. Solution: Refuel the car's fuel tank in time. 2. Short circuit in the ignition coil circuit: If there is no response when igniting, but the horn and headlights work, use a screwdriver to test the ignition at the negative terminal of the car's ignition wire. If no spark is observed, it indicates a short circuit between the low-voltage terminal of the ignition coil and the ammeter. Solution: Clean the terminal, tighten the nut, and replace the circuit in time.

Why Can't the Van Key Be Turned?

Direction wheel's automatic locking function is activated, causing the key to be unturnable. Here is the relevant information: 1. Function: The steering wheel lock is a simple anti-theft feature. After the car is turned off, turning the steering wheel from the centered position to one direction (usually to the left) by a certain angle will cause the steering wheel to "click" and lock. In the locked state, the steering wheel cannot be turned, the key cannot be turned, and the car cannot be started, thereby achieving the anti-theft function. 2. Precautions: When you find that the key cannot be turned, do not force it to turn, as this can easily cause the key to bend or even break.

Trending Ranking

What engine does the Jianghuai Refine M3 have?

What are the reasons for high water temperature in a sedan?

What brand is the Langdong transmission?

Why Is It So Difficult to Pick Up the Accord Space Silver?

How is the reputation and fuel consumption of Changan Oushang X5?

What are the common faults of Wuling Hongguang mini?

What Causes the Abnormal Noise at the Moment of Starting the Magotan?

What is the actual fuel consumption of the XC90?

How Many Horsepower is 158 Kilowatts?

What are the interior dimensions of the Wuling Hongguang?

More Forum Discussions

Does Roof Film Need to Be Registered?

What are the reasons why the Malibu can power on but not start?

Is the Asia Lion a model launched by FAW Toyota or GAC Toyota?

What are the misconceptions about the three major components of the ASX?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.