so i need help from the forum
bought a kawasaki vulcan 750 2000 model, 11300 miles on it
Has been running rich since i bought it.
mods on it
unbaffled cobra exhaust, ear shave
was filling the crankcase up with oil when i bought it due to running so rich.
disassembled carbs to find that a float valve needle seat was pressed in incorrectly and was keeping the valve open. Corrected problem, cleaned thoroughly, reassembled, made absolute sure that all the diaphrams were sealed. Carbs were very clean on inside. Removed main jet and pilot jet and cleaned. there was another one in there but i wasnt sure how to remove it, didnt have a flat head slot or a hex head on it. did not remove that one and check it.
i am not currently running as rich as i was, but i am still running rich enough to foul plugs within an hour of running. with new plugs, runs like a bat outta ####! once they start to foul, wont idle good and loss of power.
I found that my needle valves are fluctuating at idle, not real far up and down but rapid up and down bounces. i am attatching a pic, the hole that is marked in the pic is spitting fuel out of it. I have already disassembled the carbs several time, checked comp, timing, cylinder leak down test, etc. I installed ear shave air cleaners but have done the coaster install yet. i have taken my reed valves off to look at them and they are so sooted up. I am a very seasoned mechanic with a background in professional motorsports. But i am totally stumped on this. I just pray that i am overlooking something, and by the way if anyone needs coaster plates, im gonna start milling out some custom ones soon, i made some for mine that are maltese crosses.
the petcock is operating properly. it was doing this with the stock air box setup. can some one tell me why my airflow through the barrel is not holding the slides at an even spot, and why fuel is coming out of the hole in the pic

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Ok, forgive me if I'm asking overly basic stuff here. Not questioning your abilities but I'm curious how much the previous owner / mechanic had a hand in the stuff done to the bike...

I really feel like you may need to run jets a size or two smaller, unless it's only at idle that your running rich, but from what you've said it seems like it's at all ranges and affecting both cylinders right? Hope I've helped you some. Out of curiosity what are your mixture screws set at?
dv

Both needles are bouncing? Hmmm. Still seems like a vacuum leak somewhere. I've had this happen before, so let me search that distant memory and see what else I did to correct the problem.

A couple of additional comments/"seconds" on Dave's comments:
If you do the ear shave, you need to rejet - VoIP Doc has a nice write-up of the shave proc and the specs for the jets should be in there (42/142, I think). Also, 2 spacers under the needles (without the spacers, you'll be running rich).

That third jet doesn't come out, so you're fine with having just pulled the two out.

If you're spitting fuel, something's not aerosolizing correctly, which suggests a plugged passage. If you haven't yet, pull out the A/F screws completely (you'll have the screw, a tiny washer, and a tiny gasket) and clean out that passage.

I have a couple of spare carb bodies - if you want to try a different one to see if the problem is endemic to your carbs, give a shout.

the exhaust and maybe some jet work was done before, i have put the shims on the needle when i did the ear shave. i am starting to think as well that the jet size is too large, or a blocked passage. i will get the jet numbers on it later tonight. i read an article last night on a condition that the keihin carb has that if it is too lean then it will foul the plugs and the plugs will be sooty but not wet. my plugs are getting sooty, but not wet. thank you all for the replies

my mixture screws are currently at 1 3/4 out. i tried 2 out but ran too rich

You may have the wrong size jets, 2 1/2 to 3 turns out is usually good. I suspect that your floats are adjusted poorly or are damaged. It sounds like the floats are dumping way too much fuel into the carb.

i bit the bullit right away and got a kawasaki fuel level tester, checked and double checked the floats, they are dead on

i borrowed a kawasaki fuel level tester, checked and double checked the float levels, they are dead on

just went and bought a factory jet kit, and a 142.5 jet kit and some new needle spacers, gonna play with the mixture when i get off of work

That's what I'm running. It screams thru the whole rpm range and is smooth when keeping her at a civilized pace. Hope your next post is a shout of joy.