Drill a hole?  There's already a port in the J pipe before the cat for
testing; no need to drill a hole.

Marc Perdue

John Brush wrote:

> In <BA72E275.2467%msutts@earthlink.net>, on 02/14/03
>    at 06:14 PM, Matt Sutton <msutts@EARTHLINK.NET> said:
>
> >Well, besides rusty, no idea. From the PO service records I have, it
> >hasn't been replaced. The pressure at the tail pipe is pretty weak... Is
> >there a simple back pressure test?
> > Thanks for your reply, I hadn't thought of the cat. Should've though-
> >it'd been having that accelerating-through-cold-molasses feeling that I
> >experienced on an old dodge van.
> >                                    -Matt
>
> Many muffler shops will do a cat test for nothing. They just drill a small
> hole ahead of the cat, and measure the input vs the output. Of course,
> with a vanagon exhaust, who knows where they will drill :-) but if you
> keep an eye on em, it should be okay to let em test it.
>
> John