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Thread: Possible ECU damage for Hyosung GT250R EFI

  1. #1
    Join Date
    14th March 2019 - 20:01
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    HYOUSNG GT250R
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    Possible ECU damage for Hyosung GT250R EFI

    Hello, my name is Jun, First time posting here.

    I need some help with my bike.

    I have a 2010 Hyosung GT250R EFI, I owned this bike for about 5 Months now.
    One day the bike just wouldn't start. (Cranked but not starting.)
    There was spark from the spark plugs but fuel was not being injected into the engine.
    I initially thought the injectors have gone bad but it was very unlikely that the both injectors would stop working at the same time.

    So I called in a mechanic to have a look at the bike and ran a diagnostics and no error codes were found.
    Even the injectors were getting the right voltage and everything else was working fine.
    It just wasn't injecting fuel.

    We came down to a conclusion that it must be the ECU that is malfunctioning. (there was a major short circuiting after the first week of owning the bike that blew all the fuses.)
    But I am still confused about how an ECU can be working just fine for another 3 months and all of a sudden stop working.

    It's the best guess I have atm, and I want to test if it's actually my ECU that is faulty.

    I wonder if there are any GT250R EFI model owners out there in Auckland who would let me test their GT250R ECU on my bike? (It would take less that 5 mins)
    I can pay for the trouble for anyone to ride over here.
    I live in West Harbour and It would be very much appreciated if there is anyone out there who could help me with this.

    Thank you so much and have a nice day

    My phone number is 021 026 19193
    just in case if anyone wants to message me (Cheers!)

  2. #2
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    27th November 2012 - 11:25
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    what did the mechanic say after his diagnosis? or was the bill to continue too much to bear?

  3. #3
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    28th May 2006 - 19:35
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    Quote Originally Posted by Juny View Post

    I wonder if there are any GT250R EFI model owners out there in Auckland who would let me test their GT250R ECU on my bike? (It would take less that 5 mins)
    and if the faults still in your bike could potentially blow there's to bits' too.....

  4. #4
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    1st September 2007 - 21:01
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    Re-check all your fuses and find out what caused them to blow in the first place.

    A short out somewhere maybe. (Look for burnt black wiring)
    Sweat wipes off. Road-rash doesn't.

  5. #5
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    14th March 2019 - 20:01
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    The Mechanic who had a look at my bike didn't charge me at all, (he's someone I know personally)
    We checked all the electrical system, things like relays, wiring and correct wattage.
    He suggested that since it's likely a ECU problem I should see if I can get some help from the forum
    rather than going to the hyosung dealership and get charged with huge amount of bill.

  6. #6
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    14th March 2019 - 20:01
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    Quote Originally Posted by FJRider View Post
    Re-check all your fuses and find out what caused them to blow in the first place.

    A short out somewhere maybe. (Look for burnt black wiring)
    The fuses blew just after 3 days of owning the bike because the dealership I bought the bike from (Red baron which is now gone)
    didn't check that there was a open after market wiring that was exposed inside the battery bay prior to selling the bike to me.
    It completely shut the bike down while I was on a motorway and it did get repaired after that. ( I am suspecting this is the cause for the current ECU damage)

    After few weeks later, bike shut off on me again on a motorway due to the faulty regulator.
    Honestly it was just a nightmare dealing with this bike through Red Baron.

    All these issues aside, I still really like this bike. I just hope I can have less mechanical problems and just enjoy riding.

  7. #7
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    Quote Originally Posted by Juny View Post
    ... Honestly it was just a nightmare dealing with this bike through Red Baron.

    All these issues aside, I still really like this bike. I just hope I can have less mechanical problems and just enjoy riding.
    I afraid Hyosung motorcycles have a very bad rep. With Red Baron closing ... the warranty would be void ... ???

    Is it fully paid for .. ???
    Sweat wipes off. Road-rash doesn't.

  8. #8
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    Quote Originally Posted by Juny View Post
    ( I am suspecting this is the cause for the current ECU damage)

    .
    electronics either work or they don't, getting a hit doesn't take three months to turn into a problem normally

  9. #9
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    Perhaps ..........
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    Sweat wipes off. Road-rash doesn't.

  10. #10
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    27th November 2012 - 11:25
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    thing is theyre cheap and have cheap parts so easy to fix, BUT NZ dealers retardedly thought nah she's $$$$ and lets whack 1000% markup on those OEM parts --- and they wonder why they don't fuck'n sell after the first batch....


    i'd love a GD250R but they brought in 1 batch and that was that.....

  11. #11
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    14th August 2018 - 21:52
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    NInja 300
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    This probably my third time to hear someone mention ECU problem on a Hyosung bike. Good luck pal...

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