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runaway two stroke

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Kawasakinut:
i got a situation maybe yall can enlighten me on . okay stuation 1996 125
recently rebuilt and would not start. now this is a buddies bike and i was like well let me try and see what i can do to get it running or started. so i kick it a few times and nothing, so i take the plug out and there was spark, so i cross that off the list. now i didn't do a compression or leakdown but it seemed to have compression. so i'm fuel, electrical or mechanical so no noticable mechanical issues so i go to fuel. i take the carb off blow it out all passages working no noticable defects or broken parts. so i look in the manual and the air  screw was not set right it was all the way in  the spec was like out 2 turns so i make the adjustment recheck the diagram against the spec chart to make sure i am adjusting the right screw. so i put the carb back on and proceed to kick this bike over about the third kick it sputters. i was like yes i just fixed this dudes problem so i kick it again and it comes to life but the only problem is that it is wide open throttle so i wack the throttle and it settles for like two seconds and the rpms climb again. so its like 11:30 p.m. in the garage with the garage door shut and everybody else in the house has already went to bed needless to say they wern't asleep for long. so this guy that owns the bike while getting shocked removes the cap from the spark plug and heres where it gets interesting this bike was still running. so i've heard about the runaway 2 stroke,coincidently the throttle  cable was not stuck and i have attended motorcycle mechanics institute so i'm just trying to see if i'm right thinking that the problem is caused by air entering the engine from somewhere? so this guy says that the bike hasn't run right since the rebuild ya think??? can anyone help me out?     

BDI:
I would check the flux capacider and if that seems fine then I would say a leak down test was in order.  :-D

BDI:
Are you sure that there are no leaks in the intake boot on either side of the carb. Are you sure the slide is dropping all the way down a two stroke engine will rev pretty high even if the throttle is only partialy open with no load. This reminds me of a funny story I will have to go post it.

kx666:
sounds lean on the low end, what do you know about the fuel in the bike?..

but now that the motor is full of water you can do a comp. test  :lol:

Wizzy214:
sounds like your reeds are bad.
hole in the intake boot.?

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