high idle issue 00 750

[smoubara]

hi all.
my poor kat has been under a cover in the garrage for 2 months now. i took her out and fired her up. the idol was normal. once i reved her up the idol wouldn't drop below 2500. so i pulled the needles out and cleaned them, and made sure the choke was off, put new gas, and took her for a short ride. no change. if i shut it off and restart it idols normal, but if i rev it past 1500 it jumps to 2500. before i put it away i did a valve adjust. i haven't synced the carbs yet. dunno if that would have such an effect. checked for vac leaks. so i think i need to either sync the carbs or check my valve clearences for being too tight. any ideas before i waste ogals of time?
thank you

[Teh_K]

I would try the carb sync first.

If you actually made adjustments to the valve clearances, that would affect/change the sync of the carbs - even if they were sync'd before the valve adjustment.

[Anonymous]

Lube the throttle cable and mechanism on the carb?

[smoubara]

i checked the cables. and am gonna buy another sync tool. i had to leave my other one behing when i moved this summer due to the mercury. thanks for the input. i will keep u updated!

[KatanaSoldier]

Did your check your choke cable? Is it sticking? Move the cable back and forth (not with the switch) and see if it makes a difference.

[md86]

Here's what I'D try first .....
Get you some Techron , drop some in ther , lower the idle adjuster ALL the way down , and go for a nice long ride . The theory .... you got some crap in your carbs , and dropping the idle all the way out ENSURES the cleaner gets to that circuit . If that don't work ..... well , time to dig a lil deeper .

[Sasquatch]

I'm sure you did this, but I'm going to ask just to be sure. did you adjust the idle with the idle adjustment knob on the left side of the carbs?

[smoubara]

choke cable pushed closed manualy on carbs,
idle adjust screw adjusted.
want to ride but bike feels a little to unstable for me (novis rider) .
i purchased a new set of sticks to sync and i guess i'll try that.
is it even possiable for a bad sync to do that?

[The CyberPoet]

Not normally.
This is a problem you get from only three things:
1. binding or too tight throttle cables. Easy to test -- remove the cables at the handlebar, then see if it still does it.
2. minor vacuum leak, such as a cracked vacuum nipple cover or a disconnected airbox drain hose. Spraying WD-40 around the area with the engine running should tell you (the idle will suddenly change if some of the WD40 makes it into a leak).
3. fuel-starved jet passages (because of fuel residues that remain behind when the fuel evaporates). The techron MD86 suggested will address that issue. Happens on every bike I buy (because the owners always haven't ridden it in eons), and techron always fixes it right up.

Cheers,
=-= The CyberPoet

[smoubara]

new tool just arrived. will report with reasults

[smoubara]

well, the sync wasn't off that much, i pulled the cover and the valves are spot on. sooooo i guess that leaves the carbs. took em off and cleaned them out. it got a little better. so i got techron like you guys said and went for a short ride. just about rite. prob 1 more ride and it should be cleared out. thanks.

[md86]

So it sounds like it WAS the pilot circuit , then . And you got it under control now . Cool 8) .

[steves]

Is the choke getting stuck? Try lubing them.