For 1990-2009 cars only
- Clean the weatherstrips and the contact surfaces with cleaning solvent.
- Apply tracing powder or chalk in an unbroken line to the contact surface of the weatherstrip surrounding the perimeter of the suspected areas.
- Close the panel completely without slamming the panel. Closing the panel completely presses the weatherstrip firmly against the mating surface.
- Inspect the applied line on the weatherstrip. The applied line is marred where contact is good. A corresponding imprint is on the mating surfaces.
- Gaps or irregularities in the powder or the chalk line on the mating surfaces indicate the areas with a poor seal.
