Question 1

Technician A says that excessive tack wiping can be the cause of dirt contamination Technician B says that if a gun is not adjusted properly, striping may occur. Who is correct?

Accepted Answer

B

Question 2

Various paint problems might be caused by poor preparation or poor ____________________ technique.

Accepted Answer

spray

Question 3

Technician A says that spraying with too slow a travel speed causes runs and sags. Technician B says that peeling occurs as a result of insufficient sanding Who is correct?

Accepted Answer

Technician A is correct because if the spray gun is moved too slowly, too much paint will be applied in one spot causing runs and sags. 
Technician B is also correct because if the surface is not properly sanded, the paint will not adhere properly and will eventually peel.

Question 4

Striping can be caused by a dirty spray gun.

Accepted Answer

A dirty spray gun can cause uneven distribution of paint, resulting in striping. Proper cleaning of the spray gun can help avoid this issue.

Question 5

Technician A says that if too fast or too slow a gun travel speed is used, chipping of a vehicle's finish can occur. Technician B says that dirt contamination occurs only after the vehicle has been painted. Who is correct?

Accepted Answer

Both technicians are discussing issues related to an auto painting process. Technician A is correct because using too fast or too slow gun travel speed can result in uneven paint application and chipping of the vehicle's finish. Technician B is incorrect because dirt contamination can occur at any stage of the painting process, not just after the vehicle has been painted.

Question 6

Technician A says that bleeding is caused by over catalyzing plastic filler. Technician B says that runs or sags are caused by using too fast a drying solvent. Who is correct?

Accepted Answer

The answer of Technician A says that bleeding is caused...

Question 7

Dieback is a term used to explain various types of industrial contamination on the surface of a vehicle.

Accepted Answer

Dieback does not refer to industrial contamination on a vehicle, but instead refers to the deterioration of a coating or finish on a vehicle due to environmental factors like UV exposure or moisture.

Question 8

Technician A says that striping can be caused by a dirty air cap or fluid nozzle. Technician B says that spraying with too much air pressure cause lifting. Who is correct?

Accepted Answer

Technician A is correct. Striping can indeed be caused by a dirty air cap or fluid nozzle. Technician B is incorrect. Spraying with too much air pressure does not cause lifting, but it can cause overspray and drying issues.

Question 9

____________________ in the finish is the most common defect problem in refinishing.

Accepted Answer

The answer of ____________________ in the finish is the most...

Question 10

Technician A says that lifting occurs due to insufficient cure time between painting operations Technician B says that sand scratch swelling occurs due to poor surface cleaning. Who is correct?

Accepted Answer

Lifting can occur if there is insufficient cure time between painting operations, as the solvents in the new layer can react with the uncured layer beneath.

Question 11

Sand scratch ____________________ is a defect that appears following application of topcoat.

Accepted Answer

The answer of Sand scratch ____________________ is a defect that...

Question 12

Technician A says that Chipping can be caused by having too much film build on the surface. Technician B says cleaning and waxing a vehicle regularly can help to minimize acid rain damage. Who is correct?

Accepted Answer

Both statements are correct. Excessive film build can lead to chipping as it may not adhere properly to the underlying surface, making it more susceptible to damage. Regular cleaning and waxing can protect a vehicle's finish from environmental damage, including acid rain.

Question 13

Some damages to paint finishes are the result of airborne contaminants such as acid ____________________.

Accepted Answer

The answer of Some damages to paint finishes are the...

Question 14

Contour mapping is a normal and unavoidable condition on a refinished surface.

Accepted Answer

Contour mapping refers to the appearance of substrate defects through the refinished surface, indicating improper surface preparation or application, and is not considered a normal or unavoidable condition.

Question 15

Solvent popping is a defect that appears as small craters on the vehicle surface.

Accepted Answer

Solvent popping is a known defect that appears as small craters on the surface of a vehicle.

Question 16

Technician A says that solvent popping is caused by improper flash time between coats. Technician B says that fish eye is caused by insufficient chemical cleaning of the surface before painting. Who is correct?

Accepted Answer

Both Technician A and Technician B are partially correct. Solvent popping can be caused by improper flash time between coats, as well as other factors such as using the wrong thinner or applying too thick of a coat. Fish eye is caused by a variety of factors, including inadequate surface preparation such as insufficient chemical cleaning, but can also be caused by contaminants in the paint and improper mixing.

Question 17

Technician A says that if too fast a gun travel speed is used, a dry sandy surface will occur. Technician B says that solvent popping is caused by over reducing the paint material. Who is correct?

Accepted Answer

Technician A is correct in stating that fast gun travel speed can lead to a dry sandy surface. Technician B's statement about solvent popping is incorrect - solvent popping is typically caused by spraying over a contaminated surface or excessive solvent trapped in the coating.

Question 18

Technician A says that fish eyes occurs due to incorrect spray pattern. Technician B says that sand scratch swelling occurs due to incorrect sandpaper use. Who is correct?

Accepted Answer

The answer of Technician A says that fish eyes occurs...

Question 19

Overspray often takes the form of spray dust that settles on areas of the vehicle not protected by ____________________.

Accepted Answer

The answer of Overspray often takes the form of spray...

Question 20

Poor hiding means that not enough film thickness has been applied over the repair.

Accepted Answer

Poor hiding means that the repair is not sufficiently covered by the applied film thickness.

Quiz 32: Paint Problems and Prevention