I've got a 2006 S60FT with a gm 2.4 liter engine. Machine came in for a thrown harmonic balancer, which intern ruined the crankshaft. We replaced the crank, and reinstalled the engine and installed new water pump,timing belt,tensioner and balancer. While engine was out we rotated engine checking compression and found 150 / 155 on all cylinders. When starting for the first time the engine cranked immediately for about 5 seconds and died. Checked all fluids, went to start again to let it run for awhile and it hasn't cranked and ran since. I checked spark ,fuel everything's good buy can't get more than 25 # of compression on any of the cylinders. Removed timing cover to check belt , and timing marks are dead on. Just can't get the compression to come back. Any thought would be great.