Mike Spera wrote:

I agree that pulling one jug gives you a limited view. What are you
looking for? Well, how about a lobe that is ground off 30-50%? for
starters.

Just pull the valve covers, crank the engine around by hand, and watch the
operation of the rockers.

George Patterson
Give a person a fish and you feed him for a day; teach a person to
use the Internet and he won't bother you for weeks.