[header] How to paint a bumper [title] Remove the plastic bumper cover or mask it off with painter's tape. [step] In order to keep from painting other parts of the car, you can either remove and paint the bumper separately or leave the bumper attached and carefully mask off the car body. Removing the bumper works best when you're repairing any scratches or cracks before repainting. 
[title] Wash the bumper cover thoroughly with degreaser and water. [step] Scrub the surface well with a tack cloth along with soapy water.