Should it be re-welded or replaced?

According to Mr. Tran Manh Cuong, Director of Giang Loc Auto Garage ( Nam Dinh ), the decision to re-weld or replace depends on the damage to the exhaust pipe. If the exhaust pipe is only slightly or moderately punctured, re-welding is a reasonable choice, helping to save costs and time. Welding the exhaust pipe in these cases will help fix the problem without affecting the vehicle's performance.

However, if the exhaust pipe is punctured in many places or has worms, welding is only a temporary solution and is not effective in the long term. In these cases, replacing the exhaust pipe is a better option, ensuring the safety of the engine and the driver, while helping the vehicle operate more stably and durably.

Exhaust pipes that are not severely damaged should not be replaced.

Although car exhaust pipes are made of stainless steel with high durability, due to working under temperatures that can reach up to 427°C, they are susceptible to wear, rust and cracking over time. When the following signs appear, drivers should consider replacing the exhaust pipe.

Loose exhaust pipe, making a banging noise: The exhaust pipe is located under the car, if cracked or damaged, it can become loose and cause a banging noise when the car is moving. This is a clear sign that the exhaust pipe needs to be checked and replaced promptly.

Burning smell coming from the exhaust pipe: When driving, if you detect an unpleasant smell coming from the exhaust pipe, this could be a sign of an exhaust gas leak. This case needs to be repaired immediately to avoid affecting health and the environment.

Check Engine Light: If your exhaust is not inspected and maintained regularly, your check engine light may come on, due to a faulty oxygen sensor. Failure to replace your exhaust in a timely manner can lead to further damage and additional costs.

In any case, drivers should take their vehicles to reputable garages to check the condition of the exhaust pipe when detecting unusual signs. Re-welding can be a cost-saving solution, but should not be overused if the exhaust pipe is severely damaged. Timely replacement not only helps the vehicle operate stably, but also ensures driver safety and reduces environmental pollution.

Source: https://www.congluan.vn/ong-xa-o-to-bi-thung-nen-han-lai-hay-thay-moi-post316490.html