Losing Power

[Papabob]

I have a 1977 Mercury 70 HP outboard. Under load, towing a tube for awhile, the<br />motor losses power. If you stop towing and put it in reverse, than forward<br />it will work fine again. Any ideas of what would be breaking down?

 

[andrewkafp]

Re: Losing Power

First thought that comes to mind is maybe the prop is slipping (Spun). When you reverse, it may tighten up and then work OK in forward for a while.

 

[Papabob]

Re: Losing Power

Prop is OK It is some electrical proplem in the motor

 

[Clams Canino]

Re: Losing Power

Actually I can think of several things, electrical being somewhat down the list near prop slippage.<br /><br />Fuel starvation comes to mind first, slight overheating 2nd.<br /><br />-W

 

[DHPMARINE]

Re: Losing Power

pappabob<br />Next time just slow down,don't shift out of gear.What happens?My guess is your stator (high speed)<br />DHP

 

[Clams Canino]

Re: Losing Power

I could be wrong but shouldn't a '77 not yet have ADI ignition?<br /><br />-W