E200TXECM 1998, I had a problem several weeks ago when flywheel key was sheered, replaced key also pulled head gaskets just to check. All looked good. Put everything back together ran compression check and 5 are at 90 and one is 85. Started it up and set timing all was ok. I left the battery on for a day or so and tried to start but low battery and wouldnt turn so I set to two batteries. I forgot to turn key off and attempted to start agian now no spark on any cylinder. Did I blow the power pak?