Removing the fuel tank, lines and cleaning injectors

[Kevin]

Hey everyone!

I’m new here and a new rider as well, feels like a blessing to find a whole community forum for Hyosung after helplessly trying to find any info on these bikes,

I have a 2011 Aquila GV250  EFI model,
My bike struggles to stay running, when I used to ride it, it would randomly cut out, a lot of the time when I give it some throttle.
Even when idling it would run for a little then cut out, when i give it some throttle, cuts out.

I stopped riding because of this issue back in 2020, and only now getting back to it. I’ve since drained the old fuel and put fresh fuel in and changed the spark plugs. I suspect that it’s clogged fuel lines, injectors or fuel filter.
My question is, how can I remove the tank and the fuel lines and get to the injectors? I am a total newbie to this and I don’t want to just yank fuel hoses out and have pressurized fuel spraying all over my garage until I know the right way to do it.

I can’t seem to find a lot on the EFI model.

Thanks everyone!

[♠️ M77]

Before we do that,   have you considered that what you are saying so far will mean it’s just the pump and its relay that needs replacing ?

Or you can take the pump out and see if its clogged ?

Fuel Lines = Usually don’t need changing just yet but they are special as they have “blue tabs” you can squeeze to release them off the pump

Then you can lift the tank off , do things slowly , very slowly =  They tried to make it easier for us using hoses that have blue tabs  (quick release)

Cleaning the injectors is a good idea why not!  – Again, its a slow process to remove 1 part by 1 , so you can memorize where everything went , since EFI has more electronic sensors than a carby motor would.

[Kevin]

Thanks, Marcel

I am new to this,
should I drain the tank first or any other things I should keep in mind when lifting off the fuel tank?
When I squeeze the tabs to release them off the pump should I expect a lot of fuel to come out?

Thanks again.

[♠️ M77]

Open fuel cap.

Use SIPHON to drain fuel in to a veey clean bucket.

A little bit of fuel will come out from hoses because it is normal they are always wet inside on a running machine.

So use cloths to hide electrics and be ready to wipe old drips of fuel if it spills in to a part

 

Make sure battery is removed from the bike

[Author]

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