Can you guess what this defect is?

Barry Theal

Barry Theal

New member
OK I have a ? for you guys. I'm curious if anyone can detect what this paint defect is? Can you tell me what caused it? Can you tell me how to Fix it?



A little about the defects. You looking at the spots on the panel. Now it almost looks like oxidation, but its not. What is it?



DSC_0629-1.jpg




DSC_0631.jpg




DSC_0633.jpg
 
Barry ... I can't really tell by the pics, but I have seen similar defects caused by clearcoating over a dirty/wet panel at the assembly line. Another possibility is that some spilled brake fluid and they used a rag that absorbed it instead of wiping it off. The same thing happened to me and it caused the paint to get dull, but Jakerooni was able to remove it without issues.



Can you actually feel these defects? Is this defect on the Porsche that you are currently working on? Did you check if the panel has been resprayed?
 
You can not feel the defect. I sanded another area with 1500 and the defect did not move. its almost as if the spots are between the base and the clear. Almost as if something penetrated threw the clear coat without damaging it. It did discolor it.
 
i would say that i was damaged by some type of liquid chemical. I have seen some stuff that turns the CC milky white, and makes it appear as if the defect is below the CC.
 
Gianni, I don't think that could in any way possibly be someone spilling brake fluid.

If this was the case, the whole panel (If refinished) would have been littered with fish eyes due to contamination.



I personally have never seen this before either though, and I'm in a body shop myself. Quite odd... if the panel hasn't been refinished, it could have come from factory maybe?
 
In all honesty in my career I have corrected some of the most horrible paint jobs I can spot a painted panel a mile away. To myself and the owners knowledge this panel has not been paint I got healthy paint meter readings and also I did a heavy visual inspection and This panel has NO sign of a repaint. The car has spots like this on other areas of the car this is just the worse of it. I'm thinking it could be a factory defect? not sure?
 
I had a red Firebird that happened to. Mostly on the rear quarters, hood, and body moldings. It was missing those very tiny dots, just the big blotches on mine.



At the time, I didn't know about Autopia, and didn't have a PC. Still, it seemed to be like there was "delaminating" of the clear/base.



If wetsanding didn't fix, you probably know that it needs a respray to be 100%.
 
AuAltima3.5 said:
I had a red Firebird that happened to. Mostly on the rear quarters, hood, and body moldings. It was missing those very tiny dots, just the big blotches on mine.



At the time, I didn't know about Autopia, and didn't have a PC. Still, it seemed to be like there was "delaminating" of the clear/base.



If wetsanding didn't fix, you probably know that it needs a respray to be 100%.
Click to expand...



Thats what I'm thinking. I just hate not being able to save paint.
 
it looks like clear coat separating from the base color. i have seem it happen on fiberglass panels but also on older gm cars. i wouldnt sand it if using an aggressive polish hasnt diminished it. you might find the clear crack and totally separate from the base.
 
solekeeper said:
Gianni, I don't think that could in any way possibly be someone spilling brake fluid.

If this was the case, the whole panel (If refinished) would have been littered with fish eyes due to contamination.



I personally have never seen this before either though, and I'm in a body shop myself. Quite odd... if the panel hasn't been refinished, it could have come from factory maybe?
Click to expand...



When I mentioned the brake fluid possibility, I wasn't talking about painting over brake fluid, just that brake fluid tends to bleach the clear when it doesn't dwell for long (few seconds).
 
Gianni D said:
When I mentioned the brake fluid possibility, I wasn't talking about painting over brake fluid, just that brake fluid tends to bleach the clear when it doesn't dwell for long (few seconds).
Click to expand...



Thats exaclty what it looks like. It looks like a bleach stain. I'm trying heavily to find a way not to have the panel resprayed. I postive it needs resprayed though!
 
If its not some type of weird etching, I'd guess there is an issue with the original paint - maybe a quality painter could ID this if it is a paint issue
 
It's either topical, (on the surface), or sub-surface.



If it's topical you should be able to correct it by abrading the stained portion. If it's sub-surface then only a repaint will correctly repair the problem.



If you've sanded a test section and seen no visual improvement then that's a pretty strong indicator it's sub-surface or below the cleaner coat layer of paint.



There's one other possibility and that is the clear layer is stained throughout the entire thickness or matrix of itself and if that's the problem then abrading the paint will just expose a new layer of stained paint.



What kind of car is it?

What is the history?

Any input from the owner?





:)
 
Always hard to tell for sure without the car in front of me, but it appears to be either clearcoat failure or some sort of chemical staining or bleaching.
 
You must log in or register to reply here.
Back
Top