hi, names blake. i have an 1988 rx7 gxl 13b non turbo. it was running and i needed to change the intake manifold gasket. well when i changed the gasket i tried to start my car i had no spark. so i changed the CAS (crank angle sensor) and tested the coil /w ignitors and there is no resistance. the leading coil has 12.38 volts with the key on and in start but the trailing has 0.00 under same conditions. no spark from either coil. this is my only car i have and i need it running. could it be the ecu or a ground. i am frustrated and ready to give up. please help me...