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1991 Johnson 150 GT #9106374 07/08/13 01:58 AM
Joined: Apr 2012
Posts: 10
S
sandstorm angler Offline OP
Green Horn
OP Offline
Green Horn
S
Joined: Apr 2012
Posts: 10
My 1991 Johnson 150 GT runs great on plane but misses and stalls bad at slow speeds. It starts good, has new plugs,new gas with Seafoam. Smokes bad at slow speeds. Any suggestions?

Re: 1991 Johnson 150 GT [Re: sandstorm angler] #9107225 07/08/13 12:53 PM
Joined: May 2003
Posts: 11,586
gary purdy Offline
TFF Guru
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Joined: May 2003
Posts: 11,586
Check the enrichment valve, it could be leaking by fuel. Idle circuits on carbs dirty. Vro pump fuel pressure side at idle causing motor to get too much oil, Needle and seat leaking on one carb. Just some of the possible causes.


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