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

[EllieMarie]

There are two methods to unclog them: 1. You can use a syringe to inject clean water into the drain holes, or water mixed with a cleaning agent, repeating twice to thoroughly unclog them. 2. You can use an air gun to blow air into the drain holes, utilizing the principle of high pressure to unclog them. Both methods are effective, and you can choose based on your specific situation. Below is an introduction to the drain holes: 1. Inspection of the drainage system: In addition to visually inspecting the drain holes, it is also necessary to check the drainage pipes. The drain holes in the sunroof and engine compartment are the most prone to clogging. 2. How to unclog the drain holes: When the vehicle's drainage is poor, you need to determine which drain hole is problematic based on the location of the accumulated water.