1985 Johnson 90 idle air bleed orifice size

eli_lilly

Chief Petty Officer
Joined
Dec 22, 2005
Messages
435
Hello,

On a 1985 Johnson 90 carb, would it be unusual to find orifice #26 used for the idle air bleed? The manual says #34, #26 is the intermediate orifice size. I've put a turdload of hours on this engine this year with it jetted like this, so whatever impact it has, it isn't catastrophic. But I am wondering if there's a valid reason for it or if someone just hosed it up. Especially since the bottom carb was completely missing the left idle air bleed orifice .

Thanks,
-E
 

iwombat

Captain
Joined
Jul 12, 2006
Messages
3,767
Re: 1985 Johnson 90 idle air bleed orifice size

I finally decided to run #25s in my 115 after the switch to boyesen reeds. They call for 5 sizes smaller air bleeds. Could be the reason.
 
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