My engine does not like any throttle with full choke and very little throttle for the few minutes it takes to warm up and ease the choke off. I have never touched the black idle adjustment knob, and after sitting for a year the bike started right up a couple of weeks ago when I did a stator charging test up tp 5k rpm. Idles right at 1100 rpm. Very responsive to the throttle and no hiccups.
Same 1/4 to 1/2 tank of gas since June 2008. Seafoam added in summer of 2009 and 2010. Fuel is starting to smell rancid, but engine still runs good.
I hope all you guys with carb problems get them cured soon.
1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15
One thing about carbureted bikes is that each one has it's own personality. When mine starts in colder weather I use 3/4 to full choke and have to tweak the throttle then it fires up. When warm it wants no throttle at all. As far as giving it some juice when I first start it, no for about a minute or so that would kill it. And one cylinder is lazy so it chugs a bit. I think new plugs and wires might help with that.
Jetted, shaved & coastered
Home made under-tank single filter
Converted ACCT's to manual (thanks wib714)
Dual vac lines on petcock (my cure for ticking)
LED tail/plate lights
Relocated helmet lock to license plate
Customized hard bags w/ lights
LED running lights
Home made 'Vita-Volt' meter
Foot rests on engine guard
The idle adjustment is for setting the idle for when the engine is warm. Should be around 1100 rpm.
Use your choke to get her started and keep her running while cold. It doesn't work like the black screw, but you kind of use it as an idle adjustment. If the engine still needs the choke to run, you should let it warm up more.
If it ain't broke... well I'm sure I can find something that is