Hyosung GT 650 R - Recent Questions, Troubleshooting & Support

Hi I have a 2011 EFI Hyosung gt650. I have just removed fuel tank to replace rear shock. All parts refitted. And now I can't start bike. I have the bike turning over but no brrrrm. Have rechecked the fuel lines are fitted correctly. But still no go. Any ideas please.
Thanks.

If the bike is a carburettor model you need to clean your jets. Sounds though you have blocked main jet. Im guessing bike has sat for a while at some stage.....

Sounds to me like the starter motor is jamming, the clicking is the solenoid working so thats ok. Remove the starter motor and connect direct to a battery but be carefull as if it does run it will jump out of your hand so best to clamp it to a bench. If it is ok its probably the sprag clutch thats jammed. Good luck

Hi Victor Process of elimination Use a Multimeter or 12v Test Lamp to test for +12v at Bulb & work back to switch / Relay / circuit breaker / Battery. THE BEST Multimeter tutorial HD Check if a Relay is being used to Boost Battery to Headlamp. Then check relay contacts. Open / Closed Relay Wiring RELAY BASICS Good Luck

Rubbers perished on the air intake to the carbs?

i have this problem too with my hyosung gt650. have you found the problem yet? thanks, bob

bad tank sending unit

i would start with pulling light bulbs out. often the short is in the socket or sometimes in the bulb. look for wires rubbing on metal, also check all connections

It is FI and stands for Fuel Injection, take it to a bike mechanic and get them to check the fault codes. It means there is an issue with the bike that needs to be sorted out.

Expensive lesson ...

Backfires are when fuel travels through the cylinders without combusting then explodes in the exhaust pipe. Fuel supply/combustion issue. It seems likely there's a problem either with the mix going into the cylinders (carbs fuel lines or air intake), or with timing. These can affect a bike at particular speeds and throttle positions. If using the choke has helped at some point that's a further indication (the choke changes the gas/air mix). ,,,

need to clean out fuel system. see where fuel is cut of wether from tank tap or in carb

The jets on the carb need to be cleaned.

The fuel mixture is too rich. adjust the air mixture screw in until the engine starts to die and then gradually turn it the opposite direction .5 to 1.5 turns and see how that does.