idle and top end speed problem..

Hukeedo

Seaman
Joined
Jul 5, 2009
Messages
66
I have a 40 HP 1960 Johnson SS..model RDSL-22 on a 15 ft Tri-hull Sea Sprite. The problems I am having is that when at idle speed, the motor starts to spit and then die on me.
Also, whether this is related to this same problem, it don't have very good top end speed, full throttle it just don't seem to have enough throttle. I put new plugs in and no change.
Any ideas please?
 
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