Wish I could help more but one thing I know is you need fuel, spark and compression. There's a valve on the fuel rail that you could push in to see if there is fuel there. When you turn the key on you should here the fuel pump. To check for spark you could pull out a plug and then reconnect the plug wire and ground the plug and get your wife to turn over the engine while you watch for a spark. As for compression if the timing chain jumped you would loose it. I'd have to find a manual to figure out the easiest way to check that. I'm no mechanic but this forum is a bit slow so this is just a few things you could start with. Good luck.