I seem to recall this all started as you were driving on the highway, suddenly it started running poorly? I find it difficult to imagine how the belt suddenly went 180 degrees out. One or maybe two teeth, but half of them? Was it exactly 180 degrees? Because the engine might actually run that way (poorly). Is there a chance it was always that way? Or could you have moved it while trying to find the issue and this was not the original problem? Just hard to believe it would move so much on its own. Is the tensioner intack? Please remind me of the situation when it first happened...it really does not matter but I'm very curious now.
Jeff, the story was I was running 60 mph on the highway in pooring rain, then suddenly the engine died. While I was on a roll, I tried to have it start on compression, but didn't work. I gave a look at the engine to see if anything could have been just unplugged. Didn't found anything. Called the towing.
When back home, I was Under the impression the fuel was culprit. But I found the fuel pump was working. Then we tested for spark at the plugs. They were a little weak, but there was spark. But after trying for awhile, I found the fuel didn't seem to reach the plugs...
Since I had a lot of spares, including new parts like plugs, spark plugs wires, distributor caps and rotors, I changed a lot of them, just in case. Anyway. they were on the car when I bought it 10 years ago, so a refresh wasn't a bad idea even if it didn't solved the problem. I even bought a combo relay and I got some spare computers. No changes.
I also tought about some non-original part (1300 cam gear on a 1500) could lead to a bad diagnosis about the timing belt. But this is a all-original 1987. The 0-5-10 degrees fingers for the crank and the pointer for the cam mark are all there and original.
The timing belt not being properly adjust was "deleted" as a solution because we were thinking (me and my best friend who's a Professional mechanic) the engine would at least try to start sometimes.
BTW, I know the crank make 2 rotations for one turn of the cam. I tried to rotate the crank many times without being able to see the mark on the cam Wheel. Then I set the Wheel right and the line on the crank wheel was facing near the ground.
I will change the timing belt anyway. I will discover then if there are missing teeth, and if the car start or if it just another bad diagnosis....
Maybe tommorow if it is not raining...
Thanks all for the comments.