So I have the top of my engine torn apart to replace the valve stem seals, with the heads still on. I'm using the air compressor method. The rocker arm assembly is removed so all of the valves are closed.
There is a big (30%) leak on cylinder 3, and it leaks through the intake. After doing some reading online, it looks like the only culprit is a bad valve or bad valve seat. I'm hoping for an easy fix like the intake gasket, but the intake gasket isn't a possibility, right? All other cylinders are 10% or less.
Also, is there any possible way to re-seat the valves with the head on the car?