How to repair exhaust pipes: hot topics and practical guides on the Internet in the past 10 days
Recently, the topic of car repair and DIY has soared in popularity on social platforms, among which "exhaust pipe repair" has become the focus of car owners' attention. The following is a detailed guide to sorting out hot topics across the Internet in the past 10 days and repairing exhaust pipes to help you quickly solve common problems.
1. Top 5 hot topics in the automotive field in the past 10 days

| Ranking | Topic keywords | Search volume (10,000) | Main discussion platform |
|---|---|---|---|
| 1 | Exhaust pipe abnormal noise treatment | 28.5 | Douyin, Zhihu |
| 2 | Winter battery life of new energy vehicles | 22.1 | Weibo, Bilibili |
| 3 | Exhaust pipe repair DIY | 18.7 | Kuaishou, Autohome |
| 4 | Oil change interval | 15.3 | Little Red Book, Understanding Car Emperor |
| 5 | Tire maintenance in winter | 12.9 | WeChat, Toutiao |
2. Analysis of common problems in exhaust pipes
| Fault type | Proportion | Typical symptoms |
|---|---|---|
| Rust perforation | 47% | The exhaust sound becomes louder and the air leaks |
| Cracked welds | 32% | Metal collision noise |
| Lifting lug broken | 15% | Exhaust pipe sagging and shaking |
| Muffler damaged | 6% | Abnormal roaring sound |
3. Comparison of 4 mainstream methods of exhaust pipe repair
1.High temperature sealant repair
Applicable scene: perforation with diameter less than 3cm
Operation steps: Clean the surface→Apply sealant→Cure for 24 hours
Advantages: low cost (about 20-50 yuan), simple operation
Disadvantages: Limited high temperature resistance (may fall off after long-term use)
2.Metal repair agent + fiber cloth
Applicable scenarios: irregular cracks
Operation steps: Polish the rusted area → Mix the repair agent → Paste the fiber cloth → Second application
Advantages: high strength, strong plasticity
Disadvantages: Requires certain operating skills (novices are prone to failure)
3.Welding repair
Applicable scenarios: large area rust or breakage
Operation steps: Cut the damaged part → weld the new pipe section → anti-rust treatment
Advantages: The repair effect is the most durable
Disadvantages: Requires professional equipment (it is recommended to go to a repair shop for operation)
4.emergency bandage repair
Applicable scenarios: temporary emergency use
Operation steps: wrap the exhaust pipe → lock the metal buckle
Pros: Quick fix in 5 minutes
Disadvantages: Only lasts 1-2 weeks
4. Comparison of maintenance costs and effects
| How to fix it | Material cost | life expectancy | Suitable for the crowd |
|---|---|---|---|
| sealant | 20-50 yuan | 3-6 months | Minor damage to car owner |
| metal repair agent | 80-150 yuan | 6-12 months | Those with some DIY experience |
| Professional welding | 200-500 yuan | More than 2 years | Serious damage to vehicle |
| Replace with new pipe | 800-3000 yuan | More than 5 years | old vehicles |
5. Things to note
1. Safety first: be sure to operate the car in a cold state to avoid burns
2. Environmental requirements: Some cities have restrictions on exhaust pipe modifications, and repairs must not change the original design.
3. Regular inspection: It is recommended to check the status of the exhaust pipe every six months, especially after corrosion by snow melting agent in winter.
4. Professional advice: If the engine fault light comes on, you need to go to the store for inspection immediately.
From the above analysis, it can be seen that the appropriate solution for exhaust pipe repair needs to be selected based on the degree of damage. Small problems can be solved with DIY, but for serious damage, it is recommended to seek professional repairs, which can not only ensure driving safety but also extend the service life of the vehicle.
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