Hello everyone I am new to this forum I am having issues with my motor it's a 1975 johnson fast track 175 hp I got the boat a few months ago its been starting up good till this past weekend I fired it up it this weekend it idled for about 10 second then it sat off and now I will not fire up I checked all the plugs but there is no spark at all I did a spark test but not spark a friend said possible the power pack is bad any help would be great