May be when you want to buy a used car?
"ILJ" <res1kumh@verizon.net> wrote in message
news:tJYSb.8763$9a4.3978@nwrddc01.gnilink.net...
> What is the point of a compression test? I know what it measures, but if
you
> get a poor compression ratio, how do you fix it?
>
>