had to get towed back to port yesterday from watch hill reef.have 2002 90 hp johnson 2 stroke motor running fine all day til went to make another drift motor started then sputtered and stopped running couldnt get started again...changed spark plugs ....then found had no spark..never had this happen b4 ..any input into were to start looking to correct problem would be great...what color wire from key switch to motor is for power....turns over fine ..no spark