Reply To: Struggling under load

[billw]

I guess I would pull out the spark plugs and look at them. They should appear pretty much the same. I would also check for spark on both cylinders. Spark on that engine should jump a quarter inch, easily. If you’re not familiar with the sound of a running big twin or RD, you can be fooled in thinking that it’s running on both cylinders, when in fact, it’s only running on one. They run remarkably good on one. They just have no power.

Another thought is maybe a bad hook in the bottom of the boat? Just guessing here.

Long live American manufacturing!