Reply To: Dies on idle (after 1-3 minutes) – GV250
Check your coils for resistance and see if your HT Caps are arc-ing (loose sparks out of the plug) This says its for 125GT but ignore the title, you want to use it as a guide to check resistance of your coils and the stator unit too.
Rectifier – How to Test Stator , Battery , Regulator – GT125R Carby
https://hyoriders.club/forums/topic/rectifier/embed/#?secret=XRZVPeFVeD#?secret=NKSVOrwuC3 I once had to replace everything on a 2012 DAEWOO model GV250 and the customer was also stumped, it turned out, despite the stator working, it was the root cause. How? The resistance was OK for the pulse sensor and stator was charging 70v strong around 4k revs , but as engine got hotter and hotter, it started to die down. We replaced the stator unit , and it was fine since then Also the Daewoo ECU is my most frustrating ECU to work on compared to Delphi or Sentec ones , they absolutely want every single connector on the plug to be free of rust , oxidization, dirt etc. Contact Cleaner is advised. Do not put liquids on the ECU itself = Use compressed air only. Just the ECU area you have to be extra caution, it only takes 1 wire or 1 pin to ruin the whole thing for good and it is near impossible to get a new Daewoo ECU. I would deal with the TPS later, as its already idling at 1.5k rpm, although just a minor tweak should make her idle at 1800 rpm (Brand new GV’s idle at 1800rpm straight from the factory, it was the carb models that idle’d lower around 1.5K rpm as mandated by the Hyosung service manual) Also it helps to get fresh plugs again (CR8E Yellow or LASER Rainbow plugs only) – They don’t like “IX Iridium” plugs. Also if it has stock plug caps, throw them away, they always let us down , and get yourself NGK caps. Very recommended. If not , use SV650 1999 caps (ensure your engine hole can still be covered to stop dirt or water going to your plugs!) and use SV650 1999 coils (they are bigger) but made by Mitsubish Japan (get OEM ones) , they may be big, so expect to make room inside your plastic cover under the tank for them. However, if your HANKUK Korea coils are OK, leave them there and just focus on the HT caps. Generally when the plugs and caps go bad , it takes out the coil with it! Check this out too:
Hey good morning!
What NGK caps were you referring to? Do you have a link to these?
That would greatly help me out, tysm!
'12 GV250 EFI