1990 20hp Johnson bogging down

D

duhunter

Recruit
Joined
Jan 20, 2010
Messages
2
My Johnson runs and starts okay but when i have the trottle wide open it bogs down until i have throttle about three quarters the way open. I was told it could be the fuel pump or the stater.

I anyone have any ideas?
 
Barnacle_Bill

Barnacle_Bill

Admiral
Joined
Feb 8, 2004
Messages
6,469
Re: 1990 20hp Johnson bogging down

Try it again and when it starts to bog down pump the primer bulb. If it acts like it wants to go then rebuild the fuel pump.
 
bktheking

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: 1990 20hp Johnson bogging down

duhunter said:
My Johnson runs and starts okay but when i have the trottle wide open it bogs down until i have throttle about three quarters the way open. I was told it could be the fuel pump or the stater.

I anyone have any ideas?
Click to expand...

Or you have dirt in the main jet of the carb restricting fuel flow causing it to bog at WOT. Fuel pump, maybe but carb clean first. Stator, doubtful.
 
D

duhunter

Recruit
Joined
Jan 20, 2010
Messages
2
Re: 1990 20hp Johnson bogging down

Well, I had found what the problem was!!! Two things: first was that when I had clean the carbutator i left the main gas line hose clamp loose and the other was that when I checked the fuel pump i didnt have it seated just right and it was sucking air.
 
Cofe

Cofe

Lieutenant Commander
Joined
Apr 23, 2009
Messages
1,883
Re: 1990 20hp Johnson bogging down

Thanks duhunter for writing back what the problem was. Many times people don't let us know what worked, and what didn't. Welcome to iboats!
 
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