How to Clean the Sunroof Drain Pipe?

[DelDelaney]

Cleaning the sunroof drain pipe using the syringe injection method: Connect an infusion tube to a syringe, first extract the accumulated water from the drain trough to avoid backflow when injecting forcefully. After removing the water, fill the syringe with clean water, align the outlet of the infusion tube with the entrance of the drain pipe, and control the force based on the resistance encountered during injection. Once water overflows, use the syringe to suck out the dirty water mixture. Repeat this process several times to unclog the drain pipe. The air pump method: Use high-pressure airflow to pressure-clean the drain pipe. During the process, wrap a piece of cloth around the air nozzle to prevent dirty water from splashing back and staining clothes or the vehicle.