Mikunis won't idle down

LMAO, its been a learning experience, some lessons take longer then others, and Kidkawie, you really have no idea just how long this has taken, but nuff said, time to ride.

Glad to here u have it worked out.

You have a TON more patience tham me, that thing would have been in the scrap pile 3 weeks ago. HAHA!

Take all your frustrations out on the throttle tube!

well so far the rides I've taken, I am more then happy and hesitant to really open it up, quite a bit of power there,it has been and I am bettin will continue to be a blast to ride.

Ed

Well I figured this thread was done, but I guess not.I been ridin for a few weeks now and doin a bit of idle tuning yet. The engine bein bored seems to produce a lot of heat, and I don't imagine the windjammer ss fairing being there helps a lot with heat diseppation either .I am still running the mikuni 34 rs carbs, and have the 120 pilot jets in them, mix screws set at 1/4 turn out, runs 13-1400rpm idle speed.It seems like the longer I ride it and the more the heat builds, the more the idle is effected. When I come to a stop sign it settles to about 1800 rpm for a second then drops to 1400, and if it idles very long I have to tweak the throttle to keep the engine from dying. I'm wondering if anyone on the forum beside mark 1122 and I are runnin these carbs, and the issues if any they have had with them. If I didn't have to idle the engine once in a while the ride would be pure joy, cause anything above idle is just a blast.

correction no. 20 pilot jets(ty Mark)

if u keep the idle at 1400rpm will it run fine or do u still have isuses ?
i run mine at 1200rpm and all is perfect.
u have very little vacuum signal with such a big carb, so i wonder if u can expect to run perfect down below 1400rpm ?

like I mentioned the bike builds a lot of heat, and the farther I ride it the more likely that the idle becomes erratic when you come to a stop, or rather the longer it sits idling at stop signs after its good and hot the more I have to tweak the throttle to keep it goin, not much but still have to keep an eye and ear on it or it will die. When I first start it cold and it warms up say 2 or 3 minutes the idle is rock solid at 1400.

do u know for sure yet whether it rich or lean when hot ?
try taking the pods off, or adding choke when it is cold then hot. try to figure out whether it is rich or lean. the motor natural gets richer as it heats up, but try some things to determine for sure in your mind , what it wants.
as u (WE)learned with the shims, its easy to get fooled by some other issue, so lets make sure we know its rich, or lean, or the carbs at all.

ok this is pretty much what I've done: started with the 17 pilot jets, it would idle till it got really hot like after a highway run and then wouldn't idle very long on its own and shut down. i then put 15s in even 1/2 turn open these were too lean as it would hover again around 2500-3000(did the same thing when it was about out of gas one time). Now I have the 20's in and with each 1/8th turn out the idle gets more solid sounding and feeling, got the mix screws out 1/2 turn now, not absolutely positive the slides are going as far down as they should on their own as if I push the throttle toward the close position the rpm will settle to 1400.I have to make a highway run with it soon to see if I have to do more adjusting, but right now it seems to like the richer mix. I believe, as you pointed out, the lack of vacumn signal is warranting a richer mixture.

PS I don't have it rich enough yet that black smoke is coming from the exhaust under any conditions or at any rpm, and I've had the thought that I need the richer mix to help cool the engine at idle.

u should not need to run it overly rich for cooling purposes. but slightly rich is good.
if u have black smoke i would suspect that it is too rich.