i have a 90hp mercruiser inboard 1996 needed a new started brushes were broken fixed that then we started the water not full force to hose hook-up wouldnt crank over took out spark plugs and water came out of the last cyclinder so we cranked it over to get the water out it had spark at that time then after alot of cranks tried putting plugs in again and no spark never turned on water after we saw water come out again. checked all fuses no power to modular and coil now today we did have a couple of sparks but then no spark and doesnt want to turn over good again any help we are clueless battery voltage good thanks