Ford Fiesta (2011 year). Manual — part 169

Repair of damage:

• Droplet method before clear lacquer application.

• After clear lacquer has thoroughly dried, sand

surface and re-paint.

Spots

Points rising up from the paint film.

Cause/damage pattern:

• Metallic base paint sprayed too dry, so that the

metal particles could not incorporate into the
paint. The clear lacquer could not cover these
vertical standing particles because the spray air
was too hot or the booth temperature was too
high.

Repair of damage:

• After the paint surface has dried, lightly sand it

with grade P800 sanding paper, clean with
silicone remover and re-apply clear lacquer.

Metamerism/color deviations

Noticeable when identical color shades undergo a
change of hue as the light source changes
(daylight/artificial light). Different pigment
composition between original and repair paint.

Cause/damage pattern:

• Use of paints with pigmentation which was not

compatible with the standard, e.g. a green can
be formulated from yellow and blue, or directly
from green.

• Use of an unsuitable mixed or ready made paint

to re-tone.

Repair of damage:

• Repaint using the correct paint.

Washing out

On paint which has been newly applied but not yet
dried, the interaction of surface tension and very
different specific gravities of the different pigments
can lead to swirl-like turbulence which results in
separation of the pigments.

Cause/damage pattern:

• Layer too thick, paint not stirred enough.

Repair of damage:

• Sand and re-paint.

Loss of gloss

Milky, dreary tarnishing of the paint with more or
less even loss of gloss.

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Cause/damage pattern:

• Cold with low air humidity.

• Heat with high air humidity.

• Substrate can be etched.

• Hardener fault or wrong hardener used.

• Paint thinned too much.

• Proportion of pigment too high because of poor

stirring.

• Not optimum drying.

Repair of damage:

• After drying, remove the matt effect by polishing.

If unsuccessful, rub down complete area and
paint again.

Covering ability/areas of thin paint

Different color shades in the surface. The minimum
layer thickness is not achieved here. The effects
range from local minor shade variations through
mottled spray zones to completely missing top coat.

Cause/damage pattern:

• No correct, uniform substrate (effect paint).

• On three-layer systems, wrong filler.

• Insufficient top coat application.

Repair of damage:

• Sand surface and recreate the paint finish.

Flow problems/orange peel

Surface structure bumpy, grained. The surface is
similar to the peel of an orange.

Cause/damage pattern:

• Paint viscosity too high.

• Use of fast evaporating, highly volatile thinners.

• Booth temperature too high.

• Spray gun distance too great, too little material

applied.

• Nozzle too large.

• Incorrect spray pressure.

Repair of damage:

• Small surfaces: fine sand and polish.

• Sand out the surface and recreate the paint

finish.

Dirt embedded in metallic base paint.

Inclusions of contamination in metallic base paint,
of different sizes and shapes (grains or lint).

Cause/damage pattern:

• Dust was not properly removed from the surface

to be painted.

• Paint material not sieved.

• Function of the painting facilities not optimum.

• Filter contaminated.

• Wearing unsuitable clothing.

Repair of damage:

• Sand and repaint.

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Dirt embedded in top coat

Inclusions of contamination in top coat or under
paint layers, of different sizes and shapes (grains
or lint). Optical adverse effect.

Cause/damage pattern:

• Dust was not properly removed from the surface

to be painted.

• Paint material not sieved.

• Function of the painting facilities not optimum.

• Filter contaminated.

• Wearing unsuitable clothing.

Repair of damage:

• Single inclusions: after thorough hardening,

sand out using 1200 - 1500 grade paper and
repolish using a suitable silicone-free sanding
or painting paste.

• Large area contamination: sand and repaint.

Water marks

Ring shaped marks appearing on the paint surface.

Cause/damage pattern:

• Evaporation of water droplets on freshly painted

and not yet fully hardened paint finishes (mostly
only found on horizontal surfaces).

• Layer too thick.

• Drying time too short.

• Hardening faults or hardener no longer useable.

• Use of unsuitable thinners.

Repair of damage:

• Rub down only slight marks with sanding paper

grade P1000 - P1200 and then polish.

• For heavy marking, sand the surface matt, clean

with silicone remover and repaint.

Paint runs

Wave-like paint run tracks in top coat or in an
intermediate layer on vertical surfaces. Mostly in
the area of swage lines, seams or openings (there
they are paint runs, otherwise curtains).

Cause/damage pattern:

• Uneven paint application.

• The specified viscosity was not complied with.

• Use of unsuitable thinner materials.

• Air, material or room temperature too low.

• Layers too thick.

• Spray gun (nozzle) not perfect.

Repair of damage:

• After thorough drying, sand unevenness flat, if

necessary leave to dry afterwards.

• Small areas of damage can be equalised using

the paint plane, then sand, polish or repaint.

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Swirl marks

Three dimensional appearance in the paint surface
in the form of smears or blotches. This effect is
intensified in direct sunlight.

Cause/damage pattern:

• Polishing using polishing machine on paint

which has not yet hardened throughout.

• Polishing intervals too long or none at all.

• Pressure too high while polishing.

• Incorrect polishing material or polishing tool.

Repair of damage:

• Allow the paint to harden completely and then

polish.

• If the damage is irreversible, rub down and apply

new clear lacquer.

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