car wont start

TrailBeast said
Compression test and/or leakdown test.

I found one like that on a car by pulling the spark plug, making sure the cylinder I wanted to check was on the compression stroke and shoot about 30 lbs of air in the cylinder.
I could hear the air coming up into the intake.

It made the engine turn over a little because of the air, but it was an obvious rush sound in the intake at the same time.
Compression test on that cylinder was low and I wanted to find out why.:D
(burned intake valve and seat not sealing)

the engine was built years ago, and stored with lotsa marvel mystery oil. put it in the car last year as I was doing work on it, I put break in oil and ran it, it was getting low vacumn 10" I noticed a anti freeze leak coming out the front corner of the left cylinder ( front). the person who built the engine didn't put sealant on the head bolts. I pulled the heads, installed new head gaskets and new arp bolts. while I had the heads off I noticed all the valves on the heads carbon on them except the valves on number 1 cylinder they were spotless. I put everything together and torqued to specs, I then started the car to these problems