Sounds like a timing problem. Your belt may have slipped or broke. try to remove part of the front cover over the belt and look as someone trys to start it. if the belt doesn't move, it's broke. You can also chech the timing by turning the motor by hand until the timing marks are lined up. the number one piston should be at the top of it's stroke. If it isn't then it's jumped time.
Your car backfires when you need a new transmission,or tune up. How do you know the difference? Simple...if your car backfires then wont start, or wont start and then backfires,you need a transmission. If it backfires, and then starts moments after, you need a tune-up. Glad to help...David
It has either . jumped timing
Timing is off.
Valve timing off, timing chain jump.
its half a turn out of time. plug fouled install a new spark plug
First check for fire at any of the sparkplugs and if you have spark then check your fuel pressure and if its not within specs then replace the pump.
Possibly the firing order got messed up.
Check the timing for the 90 Corsica. the most likely cause for the engine not starting is it has jumped time causing the engine to fire at the wrong time.
Check the crankshaft sensor. Also check the timing and timing belt. The backfiring indicates that the engine is firing at the wrong time.
sounds like pluged catalitic converter or egr valve
car has jumped it/s timing.retart timing approx 5 degrees,it should start.
Check the timing on the Corsica for jumped timing. Most likely the engine is firing at the wrong time causing it not to start.