carbs removed and re fitted now won't idle below 2500 rpm???

[shark1e]

Hi All,

First post so please be gentle

I have a GSX600FS 1994 which i have just accuired, problem was lumpy tickover and misfiring on acceleration upto 3000 rpm approx, then smooth and clean after that,
so oil and filter changed, plugs changed, carbs off in one lump not split, but did remove the carb bowls to remove muck, refit and now it won't idle below 2500-3000rpm (creeps upto 3000rpb) was fine before,
I have taken tank back off and checked the throttle cable was not caught etc, throttle butterfly seems to be returning to the stop on release of throttle etc,
checked choke cable free too,
rechecked all carb and airbox clamps are tight,
accelerates fine and seems a bit quicker now

but rip off up the road and shut the throttle off and back to 2500 rpm and creeps upto 3000rpm etc

any help on ideas would be greatly appreciated as i need her back on the road for monday afternoon,

thanks Rob

[Whosthedaddy]

Could the problem have been be a maladjusted idle or mixture screw that may have caused the problems in the 1st place?

At a glance, I would have said to check the cables, rubbers and seals
____________________
Current : MSX 125 Past : CBR 900RR Monkeybike : c50 LAC : ZXR750 H2 : FZR600 : ZX7R P3 : YW100 : TRX850: Trophy 900 T309 : GSXR 600 L0: Monkeybike : XJ6S Whosthedaddy

[shark1e]

not sure on the mix screws as i have not touched them, going to strip down again and go back over everything i did to double check,
did notice a dodgy messed up spring to return the choke slides but they were deff shut or off shall we say as i checked that as well.

just wondering if the small shutoff needle or what ever you call them, the item that the fuel float pushes on, wonder if one not in right? as did remove one to check etc, but would that cause higher revving etc

thanks rob

[finpos]

Was there a lot of shoving going on when you re-fitted the carbs? Check you didn't fold over the edge of one of the carb rubbers and introduce a huge air-leak. Very easily done.

finpos.

[shark1e]

looks like i had moved one of the carbs on the rail whilst trying to get the screws out the bowls, and this had left one throttle butterfly not shutting fully, so now straight, i will need them balancing i think, as it is still revving up and down but from 1400-1800rpm now, if i adjust the idle screw out it drops to 800-1100 rpm
but she is running ok now apart from that.

thanks rob

[shark1e]

i have stated a new topic on asking anyone if they can balance my carbs in the stafs or notts area for a reasonable charge

deff need doing now and reckon she will be one happy bunny after balancing

thanks for all the help on the above.

rob