Tried posting this earlier, but didn't use the right language, which I think confused people. Trying again.

I have a 1986 2.5 L4.

I was trying to find vacuum leaks on Saturday using propane enrichment. Didn't find anything. Disconnected the battery to reset the ECM. Reconnected, and now when I try to start the car, the starter cranks nice and strong, but there is no spark. I didn't really do anything. The car started just fine yesterday morning. Any ideas?

So check and I assume your tach does nothing also.

Pull and test the ICM

Check the resistance of the pick up coil and the ignition coil

Make sure you have +12v on the pink wire of the coil - key on

Finally took it to the mechanic. It was the temperature gauge. It was telling the ECM that the engine was at -40. The ECM was compensating by flooding the engine.

quote Originally posted by Dwrichy: Finally took it to the mechanic. It was the temperature gauge. It was telling the ECM that the engine was at -40. The ECM was compensating by flooding the engine.

Thanks for following up with the solution.
Just so you know, the temperature gauge and the ECM are connected to separate signals. If the coolant temperature sensor was lying to the ECM, that's not the same as the sender that controls your dash gauge.