Ive just swapped an engine into my 1994 E320 Coupe, The car wont start now, the spark plugs are not firing. The car was running before I swapped the engine out - had a warped head / blown head gasket. Any ideas on what could be causing it to not start? I know on Rovers you have to swap the flywheel when swapping engines as it links into the immobilizer, is their something similar on the Mercs? Thanks