1999 Johnson 150 dying in gear

K

kvance

Recruit
Joined
Feb 13, 2011
Messages
2
I have a 99 model Jonson 150 that cranks and idles very good until you put it in gear and then to keep it going you have to continue to choke it until you can finally get it to take off. Will idle in neutral all day long and runs top end very strong .Just trouble idling around ,as long as you choke it when it starts to die it will keep running and you have to keep on until you finally get it to go. Does anyone have any ideas what can be wrong?
 
SparkieBoat

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: 1999 Johnson 150 dying in gear

sounds like clogged idle jet/s or needs link and sync
 
M

montauk1

Seaman Apprentice
Joined
Nov 13, 2010
Messages
31
Re: 1999 Johnson 150 dying in gear

Take your carbs and clean all componets, or just do a carb rebuild, rebuild kits are cheap and its easy to do. Start there. Make sure you have a repair manual for your motor, it gives step by step instructions.
 
K

kvance

Recruit
Joined
Feb 13, 2011
Messages
2
Re: 1999 Johnson 150 dying in gear

Im in the process of cleaning all 6 carbs now. Found one gasket bad between carb and manifold.
 
J

jonesg

Admiral
Joined
Feb 22, 2008
Messages
7,198
Re: 1999 Johnson 150 dying in gear

I would do a compression test too,
make sure you use new kits to rebuild carbs.
Just cleaning isn't enough.
 
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