surely the gargae would check the coil paks and that its actually sparking before going mad and taking the sump off etc?? so maybe they are thinking bent rod also, especially if as said above your having over boost issue could have spiked and bent a rod..... hopefully not and its a simple fix though
Oh dear unlucky mate. Hopefully nothing to do with your overboosting problem. Was it due a belt
Overboosting, bent rod.... hummmm... connection here methinks...
lucky, very lucky
what condition was your oil pickup pipe in before the clean?