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Author Topic: help  (Read 107 times)

luson

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help
« on: December 29, 2018, 09:34:42 PM »

I have a 2012 GV250 EFI. It was running fine until the fuel pump when out. It took me about 3 month to actually get the fuel pump on order. I received the blue pump. The old one was black. After replacing it, now it runs fine until it reaches 7500 RPM. It fluctuates it start fluctuating between 8000 and 7000. (up & down) If I give more acceleration it will go up to 10000 and stays there. It seems that it is misfiring. The plugs and the plug boots are new.
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archaz

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Re: help
« Reply #1 on: January 02, 2019, 09:44:52 AM »

Possibly an injector issue... maybe need cleaned. Did any debris make it from the pump or filter to the injectors? Hopefully it is not an electrical issue.
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luson

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Re: help
« Reply #2 on: January 02, 2019, 01:19:46 PM »

The old fuel pump strainer was clean when it was removed. There were not any type of trash or sediments when the fuel tank was emptied. I have put inside the tank on a previus tank filling injector cleaner. Beside those 2 issues the motorcycle runs fine. It does not misfire at 10k rpm it just does not goes heigher. It is not that I want to blow the engine up, it seems that it does have a problem. I am going to remove the spark plug cable and check how a good connection is between the spark plug boot and the spark plug cable. It may not be it but is that I do not trust the mechanics at these motorcycle locations. There is not a hyosung mechanics. I took it one time to the dealer were I bought it for a fuel leak 3 moth after I bought it and it came back with the fuel sending unit backward. I took it back and they could not figure out why it was not showing fuel at the gage. They replace the fuel sending unit and still not showing fuel at the gage. I had to fixed myself. Thank you for your advise.
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Kiuvi599

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Re: help
« Reply #3 on: January 11, 2019, 03:41:57 PM »

Check fuel pump presure

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