Truck ran fine. Front timing cover cracked leaking oil. We replaced it. Removing gears and put front of engine back together. Now we have a no start. Runs on ether. We have 150 RPM. Ranking good motor oil pressure. New cam sensor shimmed. Dead headed hpop had only 250 psi. Put a hpop of a running truck still only have 250 psi. Truck will not start. Have 12 volts and power to irp and it has a ground when cranking. Possible something wrong with timing? No laptop available but don't have any codes with code reader scanner.