Car won't start after cylinder head was put on, turns over but won't fire

SOURCE: 2002cavalier turns over but won,t start

check starter

SOURCE: car won,t fire up but trying to turn over its as

Lots of reasoons for a no start this answer is as if it was running OK just the other day and was starting OK. The gas tank has gas? Spinning real freely indicates to me that the timing belt broke. The oil cap off the valve cover look in there to see the cam and crank engine you should see it turn. The fuel pump may not be coming on. The fuel filter could be frozen not letting the gas go though. The spark may not be happening as A senser or also a plug wire or other wire off inspection of these things something off can be the only problem

SOURCE: Car has been sitting; will turn over but won't

My first thought is to check the fuel pump operation.
Check to see if fuel pump is getting power.

This is how I check the pump.

Usually there is an in-line fuel filter that can be removed.
While its removed...bump the starter to see if gas shoots out the gas line.
If not, there might be a clog at the pump...or the pump needs replacing.

Hope this helps...