Teddy

I have run out of options, i recently put my engine back together after spinning a bearing on the crankshaft....for 3 weeks now the engine has been sitting in the car and it jus wouldn't start...There is gas present, the compression is good and the timing is set....i recently discovered tho that on start #3 n #4 on the coil pack doesnt send a spark i swapped the coil pack in a forester and it worked ...so i tried swapping ecu's and that also worked....i am confused as to y the engine wudn fire....it sounds like its gonna fire but it jus doesnt......help