How to Unclog the Two Drain Holes at the Back of a Car Sunroof?

[Hazel]

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.

[MacAdalynn]

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.

[OMary]

As a car owner, I decided to handle the sunroof leak myself. Locating the two drainage holes at the rear is crucial—they're usually at the ends of the sunroof tracks on both sides. I often use a plastic bottle cap with a small hole as a simple air blower to test if I can unclog it by blowing air; if that doesn't work, I buy a drainage pipe cleaning rod and gently poke it in to clear the blockage—never force it to avoid damaging the tube. Clogs are mainly caused by accumulated leaves and dust, so to prevent them, park in open areas and regularly open the sunroof to clean the tracks. Remember to pour water for a test after unclogging to ensure smooth drainage and no interior leaks.

[DeKennedy]

Last time my car had a serious water leak, and after checking for a long time, it turned out the drain holes were clogged. My solution was simple: locate the two drain holes behind the sunroof, first clean the outer openings with a toothbrush to remove debris; then carefully push a soft wire inside, and the mud came out after a few tries. Make sure the car is turned off to avoid electric shock during the operation. The main cause is usually dust accumulation, so I regularly check during car washes. Be careful not to use excessive force to avoid damaging the pipes—if the clog is stubborn, it's best to visit a repair shop.