1987 90hp mercury inline 6 cyl

by Jeff
(kelowna, bc, Canada )

Cruising at full speed the other day the motor died like I had shut the key off (which I hadnt). The motor would not start again. After I got home I checked for spark and only have weak spark in cyl. #1 and very strong spark in cyl. #5.


I have not had any previous issues and the motor has been starting and running good.

Any thoughts on what the problem is?

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