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  #1  
Old 3 Weeks Ago
Flam Flam is offline
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Sportster/Buell Model: 1986 evo 1100 Liberty
Sportster/Buell Year: 1986
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Default 1986 1100 butterfly carb on going problems

Hi guys
Plugs are good timing is adjusted per spec and spot on
62 slow jet 1 ½ turns out mixture
180 main
Andrews acc pump upgrade
Standard pipes but drilled out

Idle is still rough as

Everything above 2500 is fine
Accelerates cleanly
But cruising around is not smooth constant surges
Just about had it with this Butterfly carb
Put 200 plus in trying to make it work
Wanted to keep everything standard as it’s a liberty version
Any help , direction , or advice on maybe new carb I would like to keep my original air cleaner if possible but I just want to ride this thing now
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  #2  
Old 3 Weeks Ago
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Default

I use a S&S B when I feel like you do. That said. Have you tried the forum "Google custom search "

at the bottom of the page to find the stickies on your carb yet?
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  #3  
Old 3 Weeks Ago
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Default

Check the VOES to make sure it's working correctly. Is the butterfly shaft loose in its mounting holes? Low-speed carb circuit dirty, float level incorrect, tank vent stopped up? You say everything above 2500 is fine, but cruising around isn't. Is that cruising above or below 2500 rpm?
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  #4  
Old 2 Weeks Ago
Flam Flam is offline
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Sportster/Buell Model: 1986 evo 1100 Liberty
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Flam is an unknown quantity at this point
Default

yeah cruising below 2500 and Idle
checked voes seems to be working but was disconnected
and the voes spigot plugged for some reason from the PO
exhaust is original except drilled out
has an Andrews after market accelerator pump
bike has only 2700 original miles on it
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  #5  
Old 2 Weeks Ago
farmall farmall is offline
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Sportster/Buell Model: XLH
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Default

Might be an intake leak. If it still has the vile stock rubber boot compliance fittings they harden with age. You can buy aftermarket compliance fittings to keep it looking original.
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