Mariner 60 big foot only runing on one cyclinder

hamelrider

Recruit
Joined
Jul 11, 2014
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2
She's only running on the top cylinder. When i take off no 3 plug wire, no difference in rpm's. Take off wire from #2, and again, no rpm drop. Take off no 1 and it kills. So, figured carb problems. Took off all three and cleaned. Replaced. Same deal.
For grins i would just have a wire to top cylinder and, naturally, it started and ran. Then i would only have a wire to the middle plug and to my surprise, it started and ran. Then i would only hook up the bottom cylinder and low and behold, it started and ran. So. . .this eliminates plugs (which are now new), carbs, cylinders and plug wires. So now I'm thinking whatever produces spark only has enough oomph to power one plug adequately? Is that a possibility? Or. . . .thoughts?
 
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