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1
GV650 / 2012 GV650 - Clutch Switch affects DAEWOO ECU ?
« Last post by jose costa on November 27, 2021, 06:01:24 PM »
good morning everyone,

after 6 years looking for a better running on the 2012 GV650 engine - Daewoo ECU - I identified that the "clutch switch" was always in the "Clutch in" position. which never prevented the engine from starting, never generated a fault code, but always kept the bike in "normal" operation until I confirmed the irregular functioning of the "clutch switch". Result after maintenance: the engine started to run better. There are a few videos exemplifying why you shouldn't do the clutch switch by-pass, one of them made by Teeriver on youtube, which I saw many years ago, but I never suspected a problem. Other mentions are found in the GSX forums, which report that the lack of the clutch switch signal affects changing gear maps and other maps in the ECU.

Does anyone know specifically what the clutch switch signal does on the ECU of the hyosung GV650? Because in practice I've already evidenced the difference in functioning, but in theory I still don't and I don't even know how to check it out.

So, don't do clutch switch by-pass!!
2
GT250 / Re: Tachometer does not lift up at the start
« Last post by or83 on November 22, 2021, 02:13:51 PM »
fuel - i think ok. removed the enjectors and cranked the bike, they sprayed fuel
fire- i think ok . removed the spark plug and cranked while spark plug touching the engine block, they both spark.
air - compression- i will ask an mechanic to test it with compression test tool but i think it is ok too. i also didnt even placed the airfilter and airbox so they cannot be cloged.


i suspect electrical and electronical compenents. Years ago i rebuild the engine and it worked fine but sometimes it used to work on 1 cylinder. according to other user with same problem from korider;
1 - i placed 2nd grounding cable from battery, and 2nd (+) from RR to the directly battery  it solved the problem it began to work fine.
2- but also IAP sensors's connections were loose and realised it also reasons work on 1 cylinder time to time, and renewed the connections, soldered some points.

after these 2 operations it was fine when i leave the bike at the garage at the night, but when i come back morning it wasnt starting( not even on 1 cylinder). So i didnt expect compression gone night to morning without any signal(bad sound etc.) I had to change city for a while  etc.. and i hadnt achived to start the bike once again and sitting for years now.  I really confused and conidering pull out of traffic and selling its parts after a last try.

btw thanks for reply.
 
3
Hyosung Parts Help / Re: Coil packs
« Last post by UNdocab on November 20, 2021, 07:03:50 PM »
Maybe the trigger but????
unless your coils or cdi are Delphi brand the suzuki coils work. does not matter carby or efi.
carby , efi with mitsubishi or daewoo cdi  all works with sv650/ vstrom 650 coils which are mitshubishi  F6T559
4
Hyosung Parts Help / Re: Front brake caliper seal gtr650 2014
« Last post by UNdocab on November 20, 2021, 06:57:37 PM »
Thanks for the acceptance in the forum.
Not sure how it work. If Iím wrong help me out please.
Iím on the search for front brake caliper seals for my 650 2014 model. Its 4 piston and two different sizes. Canít get seals anywhere.
Location in Australia
If anyone can steer me in the right direction it will be gladly appreciated
Regards G
Take a sample to local harware store they would measure the size of it and would give you exact same thing possibly half price
5
GV250 / Re: New 2021 GV250 FI Lamp
« Last post by madry on November 18, 2021, 04:07:17 PM »
I found how to read the fault code finally.

Ignition OFF, Kill switch ON (normal mode)

Ignition sequence ON-OFF-ON-OFF-ON

then FI start blink the error code.
In my case it is
10-1-7-1, but I have no idea what is it and where to find it
6
GV250 / New 2021 GV250 FI Lamp
« Last post by madry on November 17, 2021, 11:04:45 AM »
Hello friends,

Just bought new Hyosung Aquila GV250 EFI.
After 100 km only FI lamp comes on. No blinking.  Engine runs normally.
Trying to find how to read error code to check what sensor is responsible for FI light.
Manual say it should blink an error code, but lamp just light constantly.
I could go to the dealer, but don't want to ride 260 km to Dublin with FI light.

Also did not find small coupler under the seat. There is only 4pin coupler not attached to anything there.
Suspect that this is diagnostic port as well, but who knows
7
GT250 / Re: Bike stays on with rear spark plug wire disconnected, but not front
« Last post by D09hyo on November 15, 2021, 06:33:21 PM »
Compression-test?
Thats new to me. Don't know how.
8
GT650 / Re: random hesitant acceleration on low rpms...
« Last post by UNdocab on November 12, 2021, 08:37:23 PM »
you have not mentioned the spark plug caps. And they are look like the culprit. Buy  a pair of NGK spark plug caps. OEMs are getting cracked after a while and cause that kind of thing exactly you describe
Where can I order me those? My bike kinda did these things, can't remember exactly since i haven't turned it on for ages, but might as well! I thought it was either the injectors needed cleaning or spark plugs replaced.
Best fit is SV or VStrom 650 spark plug caps. You may buy brand new from suzuki dealer or used one from ebay. The spark plug caps are Denso Tokai(Japan) brand. They are directly fit to 650cc hyosungs
I ve been using them for 8 years without any problem
9
GT250 / Re: Bike stays on with rear spark plug wire disconnected, but not front
« Last post by Cobra2 on November 12, 2021, 05:40:47 PM »
Compression-test?
10
GT650 / Re: random hesitant acceleration on low rpms...
« Last post by Death666wish_ on November 06, 2021, 02:30:58 PM »
you have not mentioned the spark plug caps. And they are look like the culprit. Buy  a pair of NGK spark plug caps. OEMs are getting cracked after a while and cause that kind of thing exactly you describe
Where can I order me those? My bike kinda did these things, can't remember exactly since i haven't turned it on for ages, but might as well! I thought it was either the injectors needed cleaning or spark plugs replaced.