So when I bought my G used, the dealership resprayed the front bumper, but didn't mask off the lip on the undertray that diverts air to the radiator. As a result, it was sprayed DG as well. After a winter and some parking scrapes, the paint is flaking off in some parts, but still well adhered in others. Anyone got some good recommendations on removing paint from this plastic? I know brake fluid would work, but I was worried it would discolor the black plastic.

 

I had the same thing happen when I got a new OEM bumper for my sedan. I've just left it as is, but I think if you put a line of tape along the paint edge you want to keep and knock it down with some 400 or grittier sandpaper it'd come right off. There's probably a better chemical solution but I don't know of any myself.

 

Goo Gone makes a graffiti removal spray. I use it to strip my grill when I paint it black and want to strip and respray it. Can be had at lowes or home depot.

 

Hi. Just wondering do they just simply spray paint over existing paint on bumper ? without sanding priming etc.

 

Typically when a shop repaints your bumper they have to sand down the surface and primer it so that the base coat will stick. If you paint right on top of a smooth clear, the paint won't stick and will peel right off.

 

+1 def have to sand it down first. Also goo gone would work great I think. Let us know what you decide to use and how it works out.