Rep Power: 0

FN2 cranking but not starting, I parked the car fir an hour, when I returned it wouldn't start.

I thought it was fuel pump so changed that out but still no good.

​​​​​​No DTCs available so I'm starting to get frustrated, anybody got any suggestions what to try next?

 
Rep Power: 125

First suggestion would be to not fire the parts cannon at it. Engines need a few things to start, so check:

-spark (in the form of spark plugs or ignition coils)
-fuel (injectors, plus make sure your fuel pump is actually priming. Could be something as simple as a blown fuse)
-air (a gnarly enough vacuum leak will cause a no start, among other things)
-compression (unlikely but wouldn't hurt to check)
-timing (I'd leave this last because it's almost certainly not this)

With regards to codes, is the check engine light not on or have you actually used a scan tool? There are sometimes stored codes in the computer even when the light is off.