Honda cancer developing on an a 2008 Civic Sedan

[Aaron MacDonald]

I’ve had this car for 3 years, it’s a 2008 Honda Civic LX sedan. The car was a very clean high mileage trade-in at a Honda dealer, it did not come certified because of the high KM’s but I’ve had no trouble with anything besides this rust issue. I have it undercoated at Krown each winter, but it’s only keeping new rust from forming, it’s doing nothing for existing rust.

In the summer of 2013 I noticed a little bit of rust forming on the rear quarter panel, I sprayed the hell out of it with Fluid Film (behind too) with hopes of keeping it as is.

[IMG]http://i61.tinypic.com/zva81h.jpg[/IMG]

This winter I noticed that it had gotten much worse – the rust had actually broken through the paint.

[IMG]http://i62.tinypic.com/mhre5h.jpg[/IMG]

SO, what I want to know is would I be better off cutting this rusted piece out and welding in a new piece then hitting it with with some paint? Or would some rust converter take care of it?

Topic

[Brian]

The rust you can see is only what has poked thru the paint. If your lucky it may not have spread too far. Take a simple screwdriver, don’t stab the panel, but try to gently push into it. Test the rust that is visible, and several inches around the rust. If nothing flexes much, then sand it all down, fill any holes with polyester based body filler, then use a sealing primer with 2 coats, then a basic primer on top of that. Paint, then clear coat. Many vehicles have areas that trap water, like behind the rear door of SUV’s. After the repairs are done, you can search the cavity behind the previously rusted are and fill at least some of the area with a can of expanding foam like builders use in the walls near doors and windows of homes.

[Ryan Wofford]

The undercoatings are good IF you sanded down all the rust before you do it, otherwise you trap the moisture in and it eat away at your car just as fast if not faster than if you didn’t put the undercoating on, there is only a couple of ways to save your car now and one is expensive and the other is risky, the riskier option is to do what peshewa said and hope the there is enough metal there to repaint it and seal it up after you have sanded off all the rust to bare steel the better option is to either replace the rusted area or graph in a new piece metal after you have cut out the old rusted piece

[Rob]

The problem with that area of the car is that it gets sandblasted by the tire constantly. Even though you can’t always see damage, the smallest penetration of the paint will eventually cause corrosion. After it is properly repaired, you might want to cover that area with a product like 3M clear film to protect it.

[Author]

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