[Halon]

My eclipse dumped all it's oil out one day when the oil filter came loose. When I tried to restarted it, it made a nice Thump sound too. What happened was the oil sprayed all over the timing belt, causing the belt to slip and get frayed. And I'm guessing the thump was 5 valves that I later found busted off inside the cylinder after i removed the head! Maybe the same thing happened to you, but hopefully not.

--OK and now I just realised you said there's a line that goes to the head that isn't plugged in. So sounds like your oil feedline wasn't connected, and all your oil sprayed out. That's shitty luck man, but I guess maybe you shoulda checked under the hood before you restarted it, or maybe payed a little more attention to the gauges because i bet the oil pressure gauge was down there at the LOW mark.