Over the past year and a half I have been trying to get my fiesta rs turbo back on the road. The car was running but the engine needed a rebuild so I pulled it out. The engine was rebuild and fitted, turns over brilliantly and builds oil pressure near enough straight away, but no spark. I have tried 3 different crank sensors,3 different Edis modules, checked/redone various earth's, 2 different engine wiring looms, new coil pack, new leads, new plugs. The fuel pump does prime and the injectors are firing. One thing I have noticed is the rev counter jumps up and down when cranking not sure what this means? The car has a aftermarket alarm which is playing up to be honest but Duno if this is wired so it can affect the spark at all? I know they are countless threads about efi sparking issues but I am literally out of ideas. So just wondered if anyone has any ideas and could help me. Or could recommend any good auto electricians that knows what's what around south Yorkshire.
Thanks
