Hi all. I'm doing my first valve job. '98 N/A S70 that should have had a new timing belt. The exhaust valves in cylinders 2 and 4 were spared. But I pulled them out anyhow to clean them up. I did the valve seat lapping with the paste and suction cup stick. I have my doubts about the process though. To test the valve seals I turned the head on it's side and filled the cavities in the head with some kerosene. One of the four valves got a little wet after a couple minutes.

So do I pull the valve back out and do the lapping again, or is there something else I should look for?

Is there a better way to test the valve seals?

Even if there's no seepage can the valve to seat contact be dangerously inadequate? I of course don't want to end up with burned valves down the road.

I was also wondering if the valve to seat contact improves during the breaking period after the repair? A sort of looking for some piece of mind question.