1977 70HP - Dies when going from stop to WOT

red_chaser

Seaman
Joined
Jan 26, 2010
Messages
62
I have a 70HP 1977 Johnson.

I recently cleaned out the carbs and de-carbed the engine. Took her out and did a couple of runs with no problem. Suddenly between moving from spot to spot the engine dies. Turns on no problem. I set it in gear and give it a little gas and then push it to WOT then dies.

I found that if I lift the warm up lever and let the engine rev up in neutral, then hit it, it would respond most of the time. When trying to plane out with a 180lb person on a skirf board it simply dies. Before it would lift 'em up just fine.

Any ideas I could try?
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: 1977 70HP - Dies when going from stop to WOT

What happens if you hit the choke ??
 
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