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2012 Hyosung GT650R Overheating

Just bought brand new, only 700 miles put on. My bike is overheating at red lights. Temp gauge all the way up and blinking. It cools down to 4 bars when riding. I have seen some say the fan does not work properly or the thermostat is bad. My coolant is good and my fan turned on when my bike was sitting in my garage after a 30 min ride. Ive heard of several ppl having this problem with their hyosung bike. Has any answers been found yet. The only thing I have seen is that while the fan turns on, it has problems and does not turn on when absolutely needed at lights. Thinking about switching to engine ice coolant as well. Let me know what others think or if they have heard of a fix. Called Hyosung and left a message, hopefully they may know something as well.

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Posted on Jan 02, 2017

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SOURCE: motor seized on 2005 Hyosung Gt650R

DID ANY OIL LEAKS COME WITH THIS SEIZING OF THE ENGINEIF NOT YOUR ONE OF THE LUCKY ONES. TIME FOR A TOTAL REBUILD ,NO DOUBT

Posted on Aug 11, 2009

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SOURCE: hi i have a hyosung gt650r only push starts.....

my gt250r wouldnt start all light turn on

Posted on Sep 11, 2009

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SOURCE: i have oil in the coolant lines

Change and refill oil and change oil filter, refill coolant to it's level with proper mixture. Run bike on idle for 10-15 minutes, do a burst of revs and run constant rev at 5000 rpm for 20-30 secs, watch exhaust pipe smoke condition and if temperature gauge indicates overheating. Let bike cool off and check oil and coolant state. If you see milky oil, oily coolant and reservoir going empty, you may have a cracked cyl head walls. Happy hunting.

Posted on Apr 30, 2010

Testimonial: "thanks for the input was also thinking that the water pump might have gone bad causing it to **** oil into the radiator. what do u think?"

  • 8909 Answers

SOURCE: 2009 Hyosung GT650R, brake light stays on. How

There is a switch that is connected mechanically to the rear brake mechanism. If the return spring has broken or the switch is broken or misalligned, that can call your problem as can the front break switch, if fitted.
Hope that helps.

Posted on Nov 05, 2010

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SOURCE: I bought a second hand

Replace or check the fuel sensor in the tank. It may indeed just be a wire either broken or disconnected.
Hope that helps

Posted on Dec 13, 2010

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--------

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I have oil in the coolant lines


Change and refill oil and change oil filter, refill coolant to it's level with proper mixture. Run bike on idle for 10-15 minutes, do a burst of revs and run constant rev at 5000 rpm for 20-30 secs, watch exhaust pipe smoke condition and if temperature gauge indicates overheating. Let bike cool off and check oil and coolant state. If you see milky oil, oily coolant and reservoir going empty, you may have a cracked cyl head walls. Happy hunting.

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Hi i have a hyosung gt650r only push starts.....


the battery is charging ok if not the bike wouldnt run-ur starter motor needs inspection-maybe the rotor or brushes r froze-1st chec wiring that gos to the starter-could be loose or bad-with a manual u can disasemble n test the motor-ni dong ma zai jian

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