[AT] Old test for a bad valve?

[pga2 at hot1.net]

Yup. If the paper flaps in and out of the exhaust, you have a bad exhaist valve.
A compression test is required for an intake valve.

Phil

> I sorta remember that there is a simple test for a bad engine
> valve--something like holding a piece of paper against the end of a tail
> pipe (exhaust stack for a tractor).  Anyone remember the details?     John
>
>                     In the wide-open spaces of NE Oregon