i have 98 tyre r subaru.the coil pack is only firing 0n front to pins.no spark on the back two leads...i replaced coil pack but its still the same,,,anyone no whats wrong?
Sound like you have a broken wire to the ecu usually if the coil pack is 3 wire at the connection the should be a 12v feed and the other two are switched to earth to spark the coils these are switched by the ecu so could be wiring or worse case an ecu