Question about 2009 Hyosung GT 650

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2009 Hyosung GT650R fuel pump not working.

I have a 2009 Hyosung GT650R and I replaced the Fuel pump sending unit. Well, now it won't pump the fuel in the line. I don't hear the pump come on no more. What can be the issue??

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  • Hyosung Master
  • 48,586 Answers

Hi, Udy the following is a systematic procedure for diagnosing fuel pump issues designed to keep "DRACHMA" to a minimum. If you need parts check with Amazon and eBay first to keep costs down.
1. If your pump does not turn on check the pump fuse and relay and all wiring including connectors for corroded, broken, or loose pins/sockets.
1. Normal fuel pump pressure is 3-5 PSI.
2. Check any rubber or plastic tubing for age-related pinholes by removing and plugging the ends that connect to the fuel valve and then turn on the ignition switch and watch for fuel streams exiting the pinholes, if any exist, replace tubing as necessary.
3. Check for a clogged a primary fuel filter that comes off the bottom of the pump to screen out big rocks and clean as necessary.
4. Check for a clogged secondary fuel filter that's outside if applicable by removing it from the system and replace it with a short splicing tube turn on the ignition switch and recheck fuel pressure if pressure increases to normal pressure you need a new secondary filter.
5. If all the above check out OK and the pump is not functioning properly then you need a new fuel pump.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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HYOSUNG GT 650 Service Manual
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Oct 05, 2017

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Posted on Jan 02, 2017

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garyq1970
  • 85 Answers

SOURCE: fuel pump 1998 olds bravada

  1. Properly drain the fuel tank, then disconnect the negative battery cable.
  2. If not done already, raise and support the rear of the truck safely using jackstands.
  3. If equipped on late-model vehicles, loosen and remove the tank plastic shield.
  4. Loosen the retaining clamp and disconnect the tank filler hose from the tank neck.
If fuel and vapor hoses or pump/sending unit wiring can be accessed at this time, they may be tagged and disconnected. If not, wait for the retaining straps to be loosened and lower the tank slightly for access.
  1. Tag and disconnect and accessible wiring or hoses from the top of the fuel tank.
  2. Have and assistant support the fuel tank, then remove the fuel tank-to-vehicle straps and, if equipped, the isolation strips. If no assistant is available, position a floor jack to support the tank while the straps are removed.
  3. Lower the tank slightly, then remove the sending unit or sending unit/pump wires, hoses and ground strap. Be sure to label all connections to ease installation.
  4. Carefully lower the fuel tank from the vehicle and store in a safe place.
To install:
  1. Raise the tank partially into position in the vehicle. If you are working without an assistant, you may wish to loosely install one of the retaining straps and use a floor jack to support the tank at an angle so there is access to the sending unit or sending unit/pump assembly (as applicable).
  2. Connect the fuel/vapor hoses and wiring to the top of the fuel tank, as tagged during removal.
  3. Carefully raise the fuel tank so it is fully into position and loosely secure the retaining straps. Make sure the wires and hoses are not pinched or damaged when raising the tank. Also, be sure that the isolation strips (if used) are positioned between the retaining straps and the fuel tank.
  4. It may be easier to connect the fuel filler hose to the tank neck at this time. If desired, connect the hose and secure the clamp.
  5. Tighten the fuel tank retaining strap fasteners to specification. Tighten the strap nuts to 33 ft. lbs. (45 Nm).
  6. If not done earlier, connect the tank filler hose to the tank neck and secure using the clamp.
  7. If equipped, install and secure the tank plastic shield.
  8. Remove the jackstands and carefully lower the rear of the truck.
  9. Refill the fuel tank and install the filler cap, then check for leaks.
  10. Connect the negative battery cable.
Equipped With Shield Package
  1. Properly drain the fuel tank, then disconnect the negative battery cable.
  2. Raise and support the rear of the truck safely using jackstands.
  3. Remove the shield forward support and bracket.
  4. While supporting the shield and tank assembly with the help of both an assistant and a floor jack, remove the remaining bolts holding the assembly to the frame, then lower it sufficiently for access to the hoses and wires.
  5. Tag and disengage the hoses and wires from the sending unit assembly.
  6. Carefully lower the fuel tank and shield from the vehicle, then if necessary for service or replacement, separate the tank from the shield.
To install:
  1. If separated, install the tank to the shield.
  2. Carefully raise the tank and shield assembly partially into position with the help of an assistant and a floor jack.
  3. Connect the wiring and hoses to the sending unit assembly, as tagged during removal.
  4. Raise the tank and shield assembly fully into position, then secure to the frame using the lower retaining bolts.
  5. Install the shield forward support bracket.
  6. Remove the jackstands and carefully lower the rear of the truck.
  7. Refill the fuel tank and install the filler cap, then check for leaks.
  8. Connect the negative battery cable.
  any question I can send some diagrams

Posted on Nov 12, 2008

  • 39 Answers

SOURCE: Fuel Sending unit on a 2000 Chevy Silverado

if it is the fuel level sending unit you will have to replace the pump because they are a 1 piece assambly. it will be a task to change too as you will need to either remove the truck bed or drop the fuel tank to get to it.

Posted on Mar 14, 2009

  • 582 Answers

SOURCE: motor seized on 2005 Hyosung Gt650R

DID ANY OIL LEAKS COME WITH THIS SEIZING OF THE ENGINEIF NOT YOUR ONE OF THE LUCKY ONES. TIME FOR A TOTAL REBUILD ,NO DOUBT

Posted on Aug 11, 2009

  • 15 Answers

SOURCE: i just replaced fuel tank, sending unit and fuel

Do you have spark coming from the plugs? if yes, how did you replace the fuel pump, remove the bed or drop the tank? If you removed the bed make sure that you tightened the ground wire on the frame at the rear near the taillight plug. If the ground is not tight or is broken the fuel pump will not work. If you didn't remove the bed, check the relay and fuse up front on the drivers side inner fender fuse box. I'd double check the ground wire at the rear as well just to make sure it's good.

Posted on Aug 16, 2009

karmacanic
  • 16 Answers

SOURCE: Dealer replaced fuel pump and fuel sending unit in 2006 Volvo S60

There was no need for them to replace the fuel pump unless it was in one assembly with the fuel pick-up & fuel gauge sending unit. I sounds like they installed a factory defective replacement pump or did a defective installation job. Have them put a different new fuel pump to see if the one they put in was a factory dud.

Posted on Apr 09, 2010

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