♠️ M77
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Hey,
Let’s try the basics , can you turn the key on and off 3 times and count the number of times the red Fi light blinks ?
Eg. 10 blinks , pause , 3 blinks , pause , 5 blinks , pause 2 blinks.Translates to 10-3-5-2
Make sure the red button is pressed down on the killswitch gear (Kill switch is OFF / Bike ready to crank)
This will confirm first and foremost the ECU is working or not. If it is, it will tell us what the error is before the fuel pump primes. The fuel pump & injectors are directly controlled by the ECU
6 foot pounds torque for M6 bolts (which is what they use)
Got it back together and it runs great except for the idle goes from 1500 to 3000 after putting it in gear. I can turn bike off for around 90 seconds and it goes back to 1500. I can let it idle for about 30 mins. it will stay at 1500 once it warms up intel I go to ride it.
Your intake rings are on the way aren’t they , they could help the situation as any “rev changes” while the bike is idling OR moving = Intake pipes , intake o-rings , airbox
There is 2x tutorials on the forum on how to remove and refit the GV125 airbox (it is the same part used on GV250) , use them as guides on how to reassemble correctly , I know how tight that space is , i work on Aquilas all the time.
Welcome Jonathan, is it possible to start a fresh new topic of your own , so we may be able to individually focus on your bike ? Just incase we found an issue not related to Julians , just re-copy what you said.
Hello, one probe is about 1 volt and the other 0.7 volt and sometimes jumps to 0.5 volts. In your opinion, should I replace them because they write differently about these voltages?
It is not a bad idea to replace them! – We have some used ones on ebay if you need them (click here) or check with your local dealer if you want.
The “italics” are the words i copied from the service manual , it is usually the same error on the GT650 and GV650 because they used the same O2 Oxygen Sensor as the GT250 model. No.1 Cylinder is the pipe at the front tyre yes (here in UK we translate this as Front Engine Exhaust Manifold Header)
10-1-3-2 translates to C132
This error code says = Front Cylinder Oxygen Sensor Circuit High Voltage
Copied from service manual
After engine running, the oxygen sensor signal is inputted in ECU
since then 300 sec.
In this case, the sensor voltage should be the following.
Sensor output voltage 䥰 1.0 V
Without the above range for 29.4 sec. and more, 0132 is indicatedFault = Oxygen sensor unit, and or lead wire / coupler connection
Turn the key on and off 3 times and dash will display the error
or go to “Technical Section => Manuals ” and download the 250 service manual on this forum and let us know what code it says.
Are you able to ask them to put fresh fuel in the tanks , then start the bikes so you can here also the engine sounds if it sounds healthy to you
or will the shop sell them as guaranteed “running & alive” ?Gets easier to make a decision on which one to get
The CDI is not restricted whatsoever. We have tested these loads of times under different engines (old and young)
90 and 92.5 is OK, but check these
- mixture settings , if no one messed with the screws , don’t touch em until you show us the spark plug colours inside and outside the plugs.
- Slide Needle should go back to “middle” setting OEM (click here)
- What is the current size of the “Pilot Jets” 17.5 or 15 ? (affects how well you take off too)
Show us the baffle of the exhaust and i will advise how to get the best out of it.
Try also Motul 7100 oil or Silkolene Pro 4 , the gearbox will be much smoother. For many years i always found Hyosungs just love these 2 specific bottles!
Change filter too!
Though, it is not a bad idea to strip the clutch and use the service manual to measure spring height and plate thickness , just to avoid any tendences of micro-slips of the clutch as if the bike hasn’t had a clutch change since it left the factory (some owners ignore this and sell it on, leaving you to pick up the pieces!) – I always overhaul any used bike i purchase just to act as if im the first owner.
You could always try a 17th sprocket up front , since OEM is usually 15T, ask the same guy who did the conversion for you?
Sprocket is looking good on that bike 😉
More pictures to our email once its all set up and done, i might do a shop page for it , i actually want to.
Welcome ❤
Post some pictures of her and I hope you have been putting some miles in before the cold season starts!what size are the main jets ?
Have the slide needles been altered (it has 3 settings = richer (best) , factory , lean (bad) ?
Are the slides sicky (check they might not be lifting or retracting properly to allow the main jets to give out the fuel needed for power
What size are the “pilot jets” and “main jets” on the bike ? let us know
Also look at the spark plugs (get fresh cr8e first) , go for a short ride if possible, pull them out and take loads of pictures to show us.
I would not wish for any major surprises! The fact its working well, despite the right switch woes but looks like you already figured it out! – I would have said an ugly alternative was to shoehorn in a momentary push switch inside the RH cluster.
Have you considered the shingden upgrade kit that you see on this shop? I would never use the OEM or Aliexpress type regulators on these electrically hungry beasts , no way , i have seen time and time again they love to fry their connectors and melt wires. If its an EFi machine, even more stressing to use a genuine shingden upgrade with a fresh stator kit. Your volt gauge will be reporting a consistant 14.4v
Would you be open to a carb conversion ? Far less headaches this
Or find a 2016+ harness and get a DELPHi ECU
Yours is DAEWOO , not made anymore but it is possible to find it on eBay Russia or eBay Israel
I believe since you are in the states, give WhyGoStock company a ring, they might have it locally!
Now that i have seen what you are doing , I actually want to hear it alive , that is one unique build i’ve seen with a Hyosung engine in it!
Honestly just want one to be on the safe side still a noob rider started on this thang instead of a 300 or a 250😂
You are very brave! – I would definitely keep it slow until you really learn its power and how to use it properly at the right situations.
Also tyres matter a lot (a lot), so be sure to use Michelin Pilot Road tyres (very recommmend) and do whatever the service manual says to do (every bit) , and you may still be with her for a very long time. They last as much as the owner takes care of it (sometimes better than a stupid garage/dealer does)
