So I just finished putting everything back together after replacing the oil cooler due to a leak. Now, it will turn over, but it won't start. The battery seemed drained so I charged it, but it still won't start. I checked all plugs, fuel lines, vacuum lines. I'm not seeing anything wrong. There are a bunch of error codes ( turbo actuator, glow plug module, etc.) but I'm sure that's just from when I had everything disconnected. Any ideas?????