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
Did you do the mod's yourself? Wondering if we've got to back track over anything the previous owner may have done.
was filling the crankcase up with oil
when i bought it due to running so rich.
You mean gas here right?
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
If PO did the ear shave, do you know what size pilot jets were installed?
with new plugs, runs like a bat outta ####! once they start to foul, wont idle good and loss of power
So it fouls out the plugs in BOTH cylinders after riding around at different speeds? Or after idling? I'm thinking your jet sizes are too big for what you need and the area where you ride.
I found that my needle valves are fluctuating at idle, not real far up and down but rapid up and down bounces
Were there washers under the heads of the needles? There's usually 2 with a re-jet and ear shave and but if too many are on there the needle might never sit all the way down when idling or in pilot jet operating range. What about the plastic needle retainers.. they intact? there even, lol?
i am attatching a pic, the hole that is marked in the pic is spitting fuel out of it.
Is it just that carb spitting or both? If only that one you may still have a float issue. If it's both then I'm back to the jet size question
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 wouldn't worry about the reeds, I think that's pretty normal. Mine are sooty too (now coastered) but never saw any ill effects.
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.
Wish I'd known that before. Just bought a couple, oh well. Would like to see a pic of them though. Bet you'd get some buyers. I'm might even though I have a set.
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.
If you push the slides up by hand do they resist smoothly and come back down slowly? Or are they just kind of springy and slam back down. Something doesn't seem right about those needles bouncing. I know you made sure the diaphragm's are ok but if there's a tiny hole somewhere...