Question about 2003 Hyosung GV 250 Aquila

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Engine struggling I recently purchased a 2003 Hyosung GV250 with very low miles (only 241). The woman I bought it from ran it once, winterized it, and put it away in her garage. She said the gas tank had been drained, but she had put a gallon or so of gas in the bike a week or so before I bought it. It sat for several months before I purchased it. Upon recharging the battery and firing it up, one cylinder was not working. I replaced both plugs in case one was bad and tried again. Both cylinders fired and she purred like a kitten! The problem is, she won't do over 30 MPH without choking and the engine threatening to cut out. The only dealer I can find in my area who knows anything about these bikes wants to charge me $300 for a basic tune up plus extra for parts and fluids! I'm hoping I can solve this problem on my own before resorting to laying out that much money, which I really don't have right now. Could this be an issue with the extra ethenol in the gas these days gumming up the works? How would I fit it? Any thoughts, suggestions, or advise would be greatly appreciated! Thanks! ~Jess

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Hi do not worry the carb pistons are stuck if you can remove the petrol tank and the air filter bracket then you will see the top of the ca-rb there are 4+4 screws on each ca rb try and remove
care fully and remove the piston s by giving very littel force then clean it with sum ca-rb cleaner and check for free moment by sliding if it is free put back the piston and covers and give a try it should work because just know i have don it it works massage from india

Posted on May 13, 2009

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Sounds like its starving for fuel. there is a back yard mechanics way that MAY help. first, check for fuel filter and make sure its clean and fuel passes thru the line to the carbs. take the air filter off and you should see the carb air intake. use a clean rag, one thats large enough to block any air from getting thru the carb. start the bike, rev it as high as it will go and shove the rag into the air intake blocking any air from getting in. while doing this, twist the throttle wide open.. the engine will flood out and die. sometimes doing this a couple times will **** the jets in the carbs clean. then start the bike again and see if it worked for you. try it a couple times and hopefully it saves you money..

Posted on May 08, 2009

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