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How to Repair a Cracked Plastic Auto Bug Shield

Bug shields protect the leading edge of your vehicles hood from bugs and stone chips. When a large object or blunt force cracks the plastic bug shield, your hood protection is lost. Regular glues will not bond to plastics. Fixing plastic cracks requires an adhesive designed for each specific type of plastic. Manufacturers use either ABS plastic to make opaque bug shields or Lexan plastic for clear or tinted bug shields.

Instructions

1

Spray window cleaner on the cracked area of the bug shield. Wipe the cleaner from the crack with a clean rag.

2

Stick the end of a syringe in an open container of plastic adhesive. Pull the plunger located at the back of the syringe toward you to fill it with adhesive.

3

Align the tip of the syringe with the center of the bug shield crack. Pull the syringe along the crack as you push in on the plunger. Make sure you fill the length of the crack with adhesive.

4

Set a spring clamp across both sides of the crack. Inspect the crack to ensure that both sides of the crack are at the same height. Leave the clamp on the crack for 24 hours.

5

Remove the spring clamp.

6

Sand any excess cured adhesive from the crack with 600-grit sandpaper. Avoid sanding the surface of the bug shield to reduce scuffing.