Originally Posted by Pats55
The floor pans were new replacement pans installed in 2006 they were E coated from the factory and then the black MCU painted over it. Back to the original question should you leave that e coat on them, or should you strip them, acid wash and then prime them?In my opinion don't take chances that there may be rust under that Ecoat especially with body panels.
I believe the e-coat sticks better and more thoroughly than anything one could spray on because of the electrostatic affinity the paint molecules have for the metal. With that being said, I don't strip the Ecoat, some people do. I've found it's pretty obvious to tell if the Ecoat was applied over rust because it will have a bumpy rough texture in the afflicted area. I sand these areas down to metal before priming. I haven't seen this very often on the panels I've used.