View Full Version : yellow spots on white paint

12-27-2007, 05:02 PM
on my white f 250, i am getting these yellow spots on the paint. what is this? and how can this be fixed and can it be prevented?

12-27-2007, 05:17 PM
are they just appearing?

12-27-2007, 07:11 PM
Is it on the tailgate? I used to see them on my '01 F-250 but couldn't tell if my eyes were just freaking out.

I thought it might be fertilzer stains.:confused:

12-27-2007, 10:36 PM
cheap body filler coming through

12-28-2007, 09:25 AM
its mostly on the cab of the truck, not so much on the bed.

lawn king
12-28-2007, 09:38 AM
Pre-m stains?

12-28-2007, 09:51 AM
Wondering if the yellowing spots is from it's time on a train....
No kidding!!
I have had this happen on 3 of my white Ford trucks. I was told by the dealer it was the metal from sparks that got embedded in the paint while being transported after manufacture. They had to do an acid wipe to get them all cleaned up. The start off looking a little yellowish and then turn more of a rusty color.
Just an idea.....

12-28-2007, 04:49 PM
...wax on, wax off.

12-28-2007, 05:08 PM
might be poor paint quality. I know on the older Fords, the plastic that was used had a tendency to show the yellow over time. This was on a lot of the cars that I use to see @ the folks detail shop. Another thought is tar that had been left on there too long. That'll stain the paint as well.

Being as it is a 2004, you might see if warranty will cover it.

12-28-2007, 05:58 PM
Sounds like Leprosy :)

12-28-2007, 06:38 PM
yea it looks like the yellow turns into rust dots. i never asked the dealer about it.u think a good detail will take it out?

12-28-2007, 07:32 PM
I would take it back to Ford. It is most likely from the shipping when new....

12-28-2007, 08:33 PM
its 2-3 years old

12-28-2007, 09:18 PM
acid rain..............

Ford will laugh ya right outta the showroom.........

12-28-2007, 09:59 PM
Sounds like Leprosy :)

:laugh: go dip it in the Jordan River seven times

12-28-2007, 10:02 PM
:laugh: go dip it in the Jordan River seven times

:laugh:Worked for Naaman!:weightlifter:

12-28-2007, 10:36 PM
Has the truck been anywhere that its been exposed to sparks, metal shavings or anything like that? I have a white truck and i have this problem often. It is solved by "claying" the vehicle.

12-28-2007, 10:37 PM
:laugh:Worked for Naaman!:weightlifter:

good thing I didn't say baptize :hammerhead:

12-28-2007, 11:18 PM
I have the same thing happening on my 99 F250. It is on the inside of the doors and door jams. I could not figure it out. So you guys think it will clean up??

12-29-2007, 10:05 AM
whats claying? no the truck isnt by any metal or sparks

12-29-2007, 10:22 AM
Have you taken it to a body shop yet? They might have some options for you as well.

You might be able to try a clay bar I guess. Typically once there are yellow spots, there isn't a whole lot you can do. Clay bars basically work like wet sanding in that they take off the grime build-up on the surface, they're just a lot less abrasive. They can be purchased @ any auto body store as well as @ auto parts stores. There are a couple different grades of them though. I use a medium & a fine bar. I always start w/ the fine bar because it means I will have to do less buffing & polishing when I am done. If the fine bar doesn't work though, I'll move to the more aggressive bar.

If that fails, which I really think there's a good chance of it. You may be able to try wet sanding.

All of these steps will need to be followed by a good buff, polish, & wax to take out any swirls left from the process.

12-29-2007, 10:48 AM
is clay bar the same as like a rubbing compound

12-29-2007, 11:49 AM
nope. A clay bar is actually a bar of clay specifically made for removing dirt & grime off the top layer of the paints surface. Rubbing compound is used w/ a buffer & is used when the bar doesn't give the desired results. I would compare the process to using different grades of sand paper. 0 to 00 to 000. Hope that makes some sense.

12-30-2007, 09:55 PM
Yellow spots are sometimes caused by sulpher from a power plant, Diesel units used for pumping, or honey bees. The bees don't cause rust spots though.

12-30-2007, 11:01 PM
more than likely its rail dust or from the break pads acid wash and a good buff job and wax it will be fine

12-31-2007, 08:05 AM
Yep, sounds like rail dust.

01-01-2008, 07:48 AM
Here's what I use on my white GMC. It produces fantastic results. It's a fine clay, they have more aggressive clays available if needed. Be prepared to wax any area that you use the clay on. Tony

01-02-2008, 08:48 AM
The yellow spots are called "rail dust" and yes a clay bar does the trick. Good luck!