Does the exhaust pipe still drip water in summer?
2 Answers
For the exhaust pipe to drip water in summer, at least three conditions must be met: 1. Correct air-fuel mixture ratio: A proper air-fuel mixture ratio indicates the fuel supply system is in good condition, and achieving the correct air-fuel mixture is crucial. 2. Normal engine cylinder pressure: Normal cylinder pressure means there is no wear inside the engine block, and no issues with cylinder liners or seals. 3. Low exhaust pipe temperature: A low exhaust pipe temperature indicates that most of the combustion heat is concentrated within the cylinders, with only a small amount of heat escaping into the exhaust pipe.
In summer, the air conditioning drain pipe will definitely drip, especially when the AC is on during hot and humid weather. The moisture in the air condenses into water, which is then drained out through a small pipe under the car to prevent water accumulation and mold inside the vehicle. My own car does this—I always see puddles on the ground after parking. At first, I thought something was wrong, but a knowledgeable friend explained that it's normal and means the AC is working properly. Frequent AC use in summer may result in more water drainage, which is fine occasionally as long as there's no strange odor or excessive dampness inside the car. However, if there's too much dripping or none at all, you should check if the pipe is clogged to avoid water buildup breeding bacteria and affecting health. Regularly rinsing the drain pipe opening can prevent this—I usually do a simple check at the start of summer, which is easy and cost-effective.
