Power loss, questionable mechanics.. WTF?

[amalventano@sc.rr.com (Allyn)]

> As far as low compression on cyl. #4, it's probably valves or something of
> that nature, because the car doesn't burn any oil.  I do idly wonder if a
> valve might be what's jingling at odd RPMs (usually around 2800rpm).
>
> ian

if its not valves, its likely to be ring pieces. with that kind of sound, im
half tempted to say a valve spring may be fractured, leaving the piston to
repeadedly smack the valve into submission.
Al