How to Unclog the Two Drain Holes at the Back of a Car Sunroof?
2 Answers
Here are the methods to unclog the two drain holes at the back of a car sunroof: 1. The Inflation Method: Use an air pump gun, aim it at the drain holes of the two drainage pipes in front of the sunroof, and use high-pressure airflow to blow through the pipes. Remember to cover with a rag to prevent dirty water from splashing onto your body or the car interior due to the strong airflow. The air pressure should not be too strong, as it may cause the rubber joints and drainage pipes to detach, leading to continued leakage. 2. The Enema Method: Use a syringe to flush the drainage pipes, which can help clear them. Practical experience has shown that this method is very effective and simple to perform.
A clogged sunroof drain is really annoying, and my old car has this issue. Those two drain holes are located at the rear corners of the roof, usually blocked by leaves and dust. When unclogging, I first check their positions to confirm the openings are exposed. Then, I use an air compressor with a spray gun to blow air into the holes—just be careful not to use too much pressure to avoid damaging the tubes. If you don't have tools, you can cut a thin copper wire and gently push it in, twisting a couple of times to clear the blockage. Remember, safety first: close the sunroof and avoid disturbing the tracks before working. For prevention, I park away from shaded areas and use a hose to rinse the drain openings during car washes to reduce clogs. The whole process is simple and easy—doing it yourself saves time and money.
