Fuel pump check valve and other sundry items

[Tony Hoffman]

Vinegar is what we used at the detail shop years ago, which is why I had
suggested it. Probably dealt with 40 or 50 cars, most of them coming at
once after a screw up by a concrete truck operator.

Acid is actually not that hard on paint, unless it's a concentrated strong
acid. We also used Hydroflouric acid for taking off water spots. Just don't
let any strong or concentrated acid sit on the paint for a long time.

I've found that you can damage paint much quicker with brake parts cleaner,
BG intake cleaner, and brake fluid. I have an old fender here I keep around
to check certain things before being careless around a customer's car.

Tony

On Fri, Nov 11, 2011 at 7:57 AM, Philip Rose <pjrose at frontiernet.net> wrote:

> Hmmm. I hope  that schools these days aren't teaching that "citric acid is
> the active ingredient" of vinegar. No, vinegar is very dilute "acetic acid"
> (about 5%). I doubt you need be too concerned about easily damaging your
> paint with vinegar--especially if you've already tried using the
> much-stronger "muriatic acid" and found that it was relatively
> harmless/ineffective (at least that's what I think you had indicated).
>
> Assuming that the trouble spots are not on horizontal surfaces, you might
> try saturating a wad of cotton with the vinegar--or other liquid-- and lay
> that (wet cotton) in contact with the areas that need cleaning in order to
> give the vinegar some time to work. You could test on an inconspicuous area
> of paint to make certain that no damage occurs.
>
> Have you tried getting advice about this at a good detail shop? Also, you
> might find something useful at a ceramic tile store which should carry some
> kind of liquid preparation used for cleaning grout (cement) from tile
> surfaces. Don't know about effect on paint, though. Good luck.
>
> Phil