idle help 1990 30hp johnson

mikelam123

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Jul 20, 2009
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3
Ok so here we go it may be an easy fix for some of you guys my motor will idle perfect as long as it is on muffs with the water hose but just as soon as it gets in the water it will not idle if you get it to idle long enough to get it into gear it will run fine as long as you want to go but as soon as you put it into neutral it dies and will not start back without starter fluid HELP!!!!
 

tashasdaddy

Honorary Moderator Emeritus
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Nov 11, 2005
Messages
51,019
Re: idle help 1990 30hp johnson

your idle speed is set too low. there is not any backpressure on the exhaust on muffs, set you idle on muffs at 1,000 rpms. then put the boat in the water, and fine tune the idle speed with the motor in gear. that is where you want it to idle.
 

mikelam123

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Joined
Jul 20, 2009
Messages
3
Re: idle help 1990 30hp johnson

Ok thanks for your help but here is a stupid question where is the idle speed adjustment I have adjusted the fuel needle on the carb but that and the cable are the only adjustments that I could find is there a secret screw somewhere
 

countvlad

Chief Petty Officer
Joined
Jun 29, 2009
Messages
439
Re: idle help 1990 30hp johnson

Ok thanks for your help but here is a stupid question where is the idle speed adjustment I have adjusted the fuel needle on the carb but that and the cable are the only adjustments that I could find is there a secret screw somewhere

save yourself the trouble and get a manual.... will save you time and agony.. good luck
 
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