posted video on youtube so you'll know exactly what's going on ---

bike starts, idles, but won't rev.  My only guess is floats too high and very rich idle?  But I set them at 14mm this morning.

http://www.youtube.com/watch?v=tW8d6MLfGeg

can't watch the video while at work but just to ask the dumb question,  is your throttle cable connected and/or not broken somewhere?

yes it's functioning as usual.  The bike actually started right up, revved smoothly, and as I went to take it for a ride, it stalled, and afterward would only idle.  When I open the throttle, the engine lugs, and breathes heavier, but does not increase RPM.    goes from a "chug, chug" normal idle to a "glug, glug" labored idle 

any clues after seeing the video?!?!? anyone?

iv not got much knowledge but to me it sounds and seems like something is blocking the flow of fuel. 

Did you recently rejet carbs or modify anything?

Could their be an animal that nested in the airbox and blocked any airflow from getting to the carbs or just a clogged air filter?

Does your bike need the choke to start as in your video i didn't notice you pull the choke to start it?

Have you pulled your plugs to see what they look like.  Maybe you are running ridiculously rich?

been riding the bike on the track - hasn't been sitting.  Only reason I cleaned the carbs and tried to reset the floats was bcause I hwas having and intake-backfire on cold startup.

Yeah, it starts without choke right now - so - super rich might be the prob.  I'll check back

For rpm to climb when you give throttle the butterflies have to open, and the slides have to come up.
If you're feeling the spring action of the butterflies, your butterflies are OK, so your slides are some how not lifting.
Stick your hand in the airbox and try and see if they will lift by hand ... with out bike running is fine. If not ... there you go.
Cool.
Buddha.

Mine is doing the SAME thing... I was told it was a vacuum leak (thx Buddha, I still plan on checking) but haven't had a chance to pull the carbs yet (stupid job keepin me employed and busy)!!  If you figure out what's going on- PM me or post a follow up... PLEASE!!!

ps- thx for the video... it helped me confirm the same issue

OK call I BS on the Vacuum leak - OK pull the plugs ... white as a ghost.
Spray wd40, and idle goes up ...
And bike will run very very raspy and not hold the 1100 idle, it will idle @2500-4000.
Cool.
Buddha.

yea... stuck slides seem more likely - whether cruddy, or something stupid jamming them or one of them up.  Not much could cause a vacuum leak - unless your caps blew off?  I'm interested to run mine without the air filter to see what the hek is going on.  Any other hypothesis?

BTW - measuring the floats is BS - I set them both at exactly 14mm and one turned out to have a fuel level about 2 high and other other 3mm low.... but even after trying to set them better and reassembling everything, bike runs same as in video.

this issue turned out to be electrical..... brown wire from CDI.  I've since removed most of my 'weatherpack' junctions and just soldered all the wiring solid..... if i need to swap or repair something i'll just snip it free from now on.  this *ish is getting old.

anyway..... still having problems with the bike, seems like the floats allow the fuel to fill the bowls completely..... i'm freaking confused cuz they're already set at 16mm+, and the max is said to be 15.6

Brown ... usually browns are secondary grounds ... though not in all cases.
Can someone chekc the electrical diagram and see what is on the other side of the cdi's brown wire ?
Cool.
Buddha.

bike was dying above 6k because the bowls were dry.  I had the floats set at 16mm.... So i don't understand why one minute the level reads way high, then 10 minutes later while the bike has been sitting in the driveway the whole time, it then reads way low.  anyway..... set them again as close as I could to correct - runs much better.... still pretttttty sloppy below 3k tho.  so i went to balance the carbs, broke the vaccuum port nozzle off..... FML.  Then tore the reserve fuel line and pulled the connected bung out of the tank petcock.

son of a Buddha Loves You... if this bike gives me one more frustration! lol..... it's all back together now..... better stay that way until it's sold..... but I'm sure I'll be teaching the new buyer a thing or two about workin on these bikes over the next couple weeks.

thanks for all comments and posts.... even when I wasn't handed the answer, this forum always gives me the confidence to keep on chugging along on each project until I get it right.

thanks

Quote from: krypto35 on August 06, 2009, 01:10:33 PM
bike was dying above 6k because the bowls were dry.  I had the floats set at 16mm.... So i don't understand why one minute the level reads way high, then 10 minutes later while the bike has been sitting in the driveway the whole time, it then reads way low.  anyway..... set them again as close as I could to correct - runs much better.... still pretttttty sloppy below 3k tho.  so i went to balance the carbs, broke the vaccuum port nozzle off..... FML.  Then tore the reserve fuel line and pulled the connected bung out of the tank petcock.

son of a Buddha Loves You... if this bike gives me one more frustration! lol..... it's all back together now..... better stay that way until it's sold..... but I'm sure I'll be teaching the new buyer a thing or two about workin on these bikes over the next couple weeks.

thanks for all comments and posts.... even when I wasn't handed the answer, this forum always gives me the confidence to keep on chugging along on each project until I get it right.

thanks

Carb top $10 and 5 shipping.
Fuel line - I'll throw in a foot or 2 with top.
The ghetto solution is, take a pit of inner tube and cut a tiny ass round or square dot and put in place of the O ring.
Or go to HD/lowes and buy tiny ass rubber plugs and put into the broken fitting (depends on how much is left sticking out though).

Sloppy below 3 K ... sorry your float situation is just weird ...
Lemme ask you, you have the atmospheric vent open and clean in the carb ?

Cool.
Buddha.

i'm mentally special.... so what is the atmospheric vent in the carb?  the 4 tiny holes that align around the butterflies at closed throttle?  Or the small jets facing outward on the venturi's?  All are clean and free-flowing.  Bike runs well enough, but really sloppy and boggy below 3k.... and any amount of adjusting the mixture screws hasn't proven beneficial, as the left carb has that sporadic "sneeze" backfire at warmup with or without choke, which I've read means LEAN mixture..... so I have that screw about 3 turns out to minimize that situation, while the right as 2.5.  Both floats are now in spec with fuel level at the bowl mating surface.

The T vent on the top back side of the carbs = atmospheric vent.
The rest - I am going to have to think it through.
Cool.
Buddha.

well, for now, the bike is revving fine above 3k.  but you can def hear the hesitation and stumble idle to 3k, and it's got that sloppy loud poppy rich sound.

the carb-boot-backfire is somewhat common, correct?  And it is a "lean" condition?

If you're lean in the left and rich in the right ... its vacuum related ... you need to make sure you dont have a vacuum leak form the vacuum line to petcock.
And that pop does sound like a lean misfire.
Carb boot back fire can blow shiete up in carbs.
Cool.
Buddha.

another symtom - cold start with choke, the bike revs around 2k, boot backfiring once and a while... but if I give it ANY throttle input, it dies on the spot.  I'm used to the choke getting the bike to start, then having the revs climb to about 5k, wherein I would incrementally reduce choke until off.  related?  Dunno when this change occurred.