Improper or insufficient surface cleaning or preparation. Many waxes and polishes contain silicone, the most common cause of fish eyes. Silicones adhere firmly to the paint film and require extra effort for their removal. Even small quantities in sanding dust, rags can cause this type of failure.

Effects of the old finish or previous repair. The old finish or previous repair may contain excessive amounts of silicone from additives used during their application. Usually solvent wiping will not remove embedded silicone.

Contamination of air supply, by water or oil.

Oil, wax, grease or silicone contamination.

Use of silicone-containing polishes or aerosol sprays (e.g.: interior cleaners or dressings) in proximity to the spray area.

Precautions should be taken to remove all traces of silicone by thoroughly cleaning the substrate.

Drain and clean air pressure regulator daily to remove trapped moisture and dirt. Air compressor tank should also be drained daily.

Regular maintenance of the air supply

Apply light coats of basecoat until defect is covered.

If required or recommended, use fish-eye eliminator.

In severe cases, sand the affected areas, clean thoroughly, isolate and refinish.