We are getting my buddies boat ready for the summer and when firing it up, it ran rough. We checked the plugs and they were all wet and then realized that the port side cylinders had no spark. I am thinnking power pack. I unbolted the power pack and observed that I had an ability to try to troubleshoot the problem by swapping the 2 sets of connectors (a 2 pin and 5 pin, I believe) from side to side to see if the port side would get spark back.
We had no spark on either side. I put it back together the way it was originally. Went to fire it up and had a quick firing burst that sounded like it was going to run and then NO SPARK TO BOTH BANKS of cylinders.
Could something have damaged the port side and now took the starboard side out?
Any preferred methods to troubleshoot this issue?
I looked at the schematin in a service book and saw the port side thermal switch has 2 wires going out of it. When metering them out, one is grounded and the other is not. I take it that if the head gets too hot, the other will short a ground to shut it off and think this is all normal as the starboard side wire is not grounded like the same port side wire.
I dont want to buy a PP, and it be something else and worse, something else taking the PP out.