Join Date: Aug 2008
Location: Pittsburgh, PA
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Atomic 4 won't rev under forward load
This is our first season with our new-to-us 1979 Catalina 30.
The old Atomic 4 was running great Ė until this weekend! It started right up and went into forward gear ok, but when I want to accelerate out of the slip, the engine would bog down as if under a load. It would only rev to about 1,000 RPM while laboring heavily. The boat was moving slowly, but the engine just would not rev up to speed. It sounded like an old, overloaded dump truck laboring up a steep hill.
So I tried reverse, and it ran just fine! It would rev up and power the boat like it always did!
Iím pretty knowledgeable with gasoline engines, so I went through the fuel, spark, air thing and saw nothing obvious. Iím not very knowledgeable about boat drivelines. Could this be a problem with the transmission? Shaft bearings? Prop? I saw that the shaft was turning, and I didnít notice any excessive heat anywhere.
Any and all help is greatly appreciated!
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