I wanted to follow up with what I found.
Since all of the plugs were out, I figure what the heck, might as well do a compression check. This is where the story goes sour. All of the cylinders popped about 170psi, except for #4 and #6. Both popped 60psi. In fact, with the compression gauge on #4, I could hear and see it pushing back out the carb while spinng the motor over, and with it on #6 a wierd sound coming from somewhere, the exhaust I think.
-John
It sounds like you have an intake valve stuck (or leaking) on #4 and an exhaust valve leaking or stuck on #6. Take the valve cover and off and watch the valves to see if they're all working properly. You may not have as bad a problem as you think. A valve job might fix the problem.
