John

John replied to the topic GV250-EFI 2012- motor dies under load in the forum 🔧 Hyosung Technical Help 5 months ago

I will pull the filter bag thing off to see if that fixes it. If not I have an 07 gv250 with an almost identical pump and I’ll swap them out.

Do you know any way to test the fuel pressure without a gauge? I’m in the middle of no where Cambodia and there’s not a mechanic shop that can service “big” motorcycles anywhere

John started the topic GV250-EFI 2012- motor dies under load in the forum 🔧 Hyosung Technical Help 5 months ago

Hello,
My gv250 idles strong. In neutral it can rev to red line. Up on stands it can cycle through each gear to high RPM. However with a rider it dies after 100ft or so. It dies in both 1st and 2nd gear. After it dies it will turn over but wont start up for 10-15 minutes.

Thanks for any help 👍🏼

John replied to the topic GV250 AQUILA DELPHI 2012- WONT START WITH NEW 12V-12AMP BATTERY in the forum 🔧 Hyosung Technical Help 1 year ago

Will a 2010 GV250 efi work as a donor bike for my 2012 GV250 efi Delphi? I know they have a different ecu but the coils and sensors and stuff?

John replied to the topic GV250 AQUILA DELPHI 2012- WONT START WITH NEW 12V-12AMP BATTERY in the forum 🔧 Hyosung Technical Help 1 year ago

Well, that’s not what I was hoping to hear.

I changed the rectifier before you had written me back. I also put the 12v-12amp battery on a trickle charger and today the bike started on its own and idled for about 15 minutes. I took it out for a ride close to home and after 5 minutes the bike died. I sat on the side of the road for about 10…[Read more]

John replied to the topic GV250 AQUILA DELPHI 2012- WONT START WITH NEW 12V-12AMP BATTERY in the forum 🔧 Hyosung Technical Help 1 year ago

Yes it was.

So is this a volts issue? The alternator is sending 14v instead of the 12v the battery has?

John replied to the topic GT250R_Carburetor in the forum 🔧 Hyosung Technical Help 1 year ago

I don’t know about the others but stay away from Hyosungwholesale.com I bought new gauges for a gv250 and they sent me a gt250, refused to refund the 275$, refused to accept the part back, and refused to send the correct gauges.

John replied to the topic Gv250 misfiring in the forum 🔧 Hyosung Technical Help 1 year ago

nice easy fix!! Glad you were able to get it sorted brother.

John replied to the topic Gv250 misfiring in the forum 🔧 Hyosung Technical Help 1 year ago

Sounds like either the wiring that goes to the front coil has issues or it is the ecu

John started the topic GV250 AQUILA DELPHI 2012- WONT START WITH NEW 12V-12AMP BATTERY in the forum 🔧 Hyosung Technical Help 1 year ago

I have just finished restoring a 2012 GV250 Delphi. The bike will turn over and crank strongly with a new 12v-12amp battery but it won’t start. When I hook jumper cables to my trucks 12v-90amp Amaron battery the bike fires immediately and will stay running after the cables have been detached.. also the rectifier is insanely hot, don’t know if…[Read more]

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