Can't tell from picture the volume of water leaking out, but doesn't look like much??
A valve is a metal on metal "seal" so is NOT air tight or water tight, and not suppose to be.
It will leak some water unless brand new and then it will just leak less.
Leak down test with air pressure will show 5%-8% leakage on newer engine, 9%-12% on high milers
Water will pour out of a bad valve seat seal, not just leak out.
I would call up a few machine shops and get exact quotes on valve grind, surface, pressure test and cleaning, on my 4.0l heads the cleaning, pressure check and surfacing for both heads was $130, $65 per head, not sure what valve grind would add it is more labor than parts so can add quite a bit.
New anything these days is a gamble.
New used to mean tested and working
New now means you test it we will warranty it, but not your labor to put it in and take it out
I would rebuilt old ones if they are not cracked
Last edited by RonD; 07-28-2016 at 12:24 PM.