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1973 johnson 85 Hp outboard wonbt move into high speed

F

Frank Yones

Guest
All was well until yesterday

All was well until yesterday when i was out fishing. The engine coughed a few times and then won't respond to pushing the throttle into high speed. It sounded like it was starving for gas but ideled ok. Just won't push the boat faster than low speed.
Today i checked the fuel filter. It was clean. Got new gas. Changed the plugs but do not know what gap should be. Guessed a gap of 0.032.

Any help would be appreciated.
 
" Hey Frank...
Try this:
Squ

" Hey Frank...
Try this:
Squeeze the primer bulb until it is hard...while holding this, run the boat to to the speed you want...if this works,then your fuel pump has either gone bad or rhe screen in the pump itself is clogged..on the fuel pump loosen the thumb screw,and remove the screen behind it and clean it if dirty...if not dirty, try the hard bulb again,and if the engine runs ok then...replace the pump....TommyG "
 
" Thanks TommyG,

i checked

" Thanks TommyG,

i checked the screen and it was clean. i will try the bulb test tomorrow and let you know. i am wondering if there is a high speed fuel injector for the carburator that may have gotten clogged. Not sure if there is such a device in the carb.

Frank "
 
Pull the caburetor drain plug

Pull the caburetor drain plugs and remove the high speeds jets found inside.Clean them carefully.
 
" Sparky,
could you describe

" Sparky,
could you describe how to do this or direct me to a site that shows me?

Thanks, Frank "
 
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