hyosung gt250 Troubleshooting

hyosung gt250 Troubleshooting

Posted in the Motorcycles Forum


Hollywood, FL

#1 Jul 2, 2007
I have a problem that i hope someone might have an answer for...i got an 04 gt250 about a month a go and its been flawless, running beautifully with no problems whatsoever. That was until i made the mistake of lettin a friend ride it in a parking lot and he put it on its side...not hard, didnt even make a scratch...but ever since then anytime i push the engine, as in tryin to accelerate fast and hard, in every gear it cuts out...like stalls for a split second on and off a couple times. Runs find otherwise but just kinda shuts off when reved high...was wondering if anyone else has had that problem and why laying it on its side could cause it to start doing that....and if anyone knows how to fix it. Any info would be greatly appreciated. Thanks.

United States

#2 Jul 3, 2007
Are sure it was not happening before?

There are reports of GT250's cutting out. Some call it a flat spot...

Read the whole post because there is a lot of controversy around the "fix".

Good luck.

I am not sure if this is a progessive issue, one that starts out unnoticable and gets worse. Also, I am not sure if knocking it over makes it worse.

I have heard that the ignition timing changes at a certain RPM and you feel the transition.

Hollywood, FL

#3 Jul 4, 2007
ya deffinetly wasn't happening before...its a pretty drastic thing. Never happened once until the day it was dropped and now happens everytime, mostly when i first get on the bike.

Hollywood, FL

#4 Jul 4, 2007
ok ive been looking up that common problem people are calling the "flat spot" and i dont think thats the same thing mine is doing, people say theyre losing power or rpms rev slower in that rpm range...but what my bike is doin at random high rpms is flat out shutting off for a sec, rpms go to 0 and jump back up, the bike literally jumps, and it will do it repeatitivly.

Gastonia, NC

#5 Mar 23, 2012
i have an 02 hyosung gv250. It sat all winter and now that the weather is warmer it doesn't seem to want to crank. I fully charged the battery and i replaced all of the old gas with fresh, but nothing. I know that it's a "cold natured" bike, but it has to be simple. i have never had this problem before and i rode it all the time before i parked it.
please help.

Since: Nov 08

Location hidden

#6 Mar 24, 2012
This forum gets good reviews:

They have a special section for the Hyosung line of bikes.
This (topix) forum is just too broad and general for help with specific bikes.

Here is another one:

Shinny side up.
Live to ride, ride to live.

Since: Nov 08

Location hidden

#7 Mar 24, 2012
I assume you know about kill switches, and your bike has one, and you did not accidently 'kill'.

Easy mistake to make.


#8 Oct 12, 2012
My bike runs nice but everytime u go put it in gear it stalls. Why is it stalling in gear and wont restart in gear.

Swansea, Australia

#9 May 19, 2014
have just bought a 250gt which has not been run for a few months. have cleaned carbs, but it will only ru nfor a few seconds. if i ad a wee bit of fuel down carbs it will start straight up but then dies. out of fuel.
do they have any inherent problems in this area?

London, UK

#10 Apr 30, 2015
Towball13 wrote:
My bike runs nice but everytime u go put it in gear it stalls. Why is it stalling in gear and wont restart in gear.
Hi Towball13, a instant stall going into gear is invariably the side stand kill switch being faulty! Try cleaning it or bypassing it if you can and you should be back and running.
Good luck.


#11 Nov 18, 2015
Can any body help me I bought a second hand 450 quad for my son the magneto and stater dropped a couple of small nuts then pretty much died is there any body out there that no of a wreck or can point me in the right direction for parts

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