70 HP johnson outboard Motor

DJCCOM

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Jul 31, 2012
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I have a 1999 70 hp johnson outboard motor. It runs perfectly well but when i slow it down to come into the Dock it shuts off. What could be the problem?
 

rolmops

Vice Admiral
Joined
Feb 24, 2002
Messages
5,686
Re: 70 HP johnson outboard Motor

Does it always happen or only when the engine is hot like right after running it at WOT?
 

boobie

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Nov 5, 2009
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20,826
Re: 70 HP johnson outboard Motor

When it shuts off, check your spark with an open air gap spark tester set at 7/16 " and see what you have. A place to start.
 

DJCCOM

Recruit
Joined
Jul 31, 2012
Messages
2
Re: 70 HP johnson outboard Motor

Does it always happen or only when the engine is hot like right after running it at WOT?

This happens even when i start it up using the fast idle lever. when i take down this lever the motor will stop. THE RED LIGHT FOR Service engine is on most of the time.
 

rolmops

Vice Admiral
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Feb 24, 2002
Messages
5,686
Re: 70 HP johnson outboard Motor

Sounds like the low rpm passages in the carb are clogged.
 
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