[urq] Hey guys, new email...knock knock

[Andrew B]

Just letting everybody know my new email address.  I just got in from
a brief stint down storrow drive....still smiling.

Question.  I'm not very familiar with engine noises and such, but how
do I diagnose an engine "knock" rather than something just spinning in
the engine bay?  My engine is making some noise and I'm a little
concerned.  Oil looks good, however.

Thanks,
-Andrew