Why won't my ford ZX2 car turn over?
So I was trying to install an amp late last night, drilled through my firewall for the power cable, disconnected my negative battery terminal, disconnected the positive, accidentally cause a spark. Hooked up amp cable reconnected positive, then negative. When I get in my car, the radio, the lights, the air everything works fine, except the car won't turn over, it will crank strong but no turn over, I tried jumping it, no good, I took it all apart, removed the amp and power/ground cables, still same issue, I'm assuming the spark didn't short my battery because all the electric is still going strong (I may be wrong) I was thinking maybe a bad starter? But it worked fine before the battery terminals were disconnected and reconnected? Bad fuse? Something to do with the fuel injector? Any advice and where/how to start looking would be much appreciated, thanks.
-Adam Z. Rhoads
Added (1). It's a 98 ford escort zx2 sport auto transmission 4 cylinder, it was working fine until I disconnected the battery, after reconnection, it cranks strong but it just won't start. I touched nothing other than the battery, please send help.