Operation CHARM: Car repair manuals for everyone.

Soap Suds or Bubble Test




Soap Suds or Bubble Test

1. Mask off the body ventilation outlets.

2. Close all the windows and the doors.

3. Turn the vehicle's ventilation fan to the ON position, with the selector on high speed and in the defrost mode.

4. Unlock and close the doors.

5. Apply the soap solution to the potential leak areas.

6. Look for bubbles revealing escaping air.