Question about 2005 Hyosung GT 250

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Bike runs spits fuel under rpm

Under tank spits fuel from part that is directly mounted under tank. two fuel lines run off of it

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Not necessarily. My 2008 GT250R spits fuel from the small hole on the side of the vacuum fuel pump. I assume that it is time to repalce the fuel tank!

Posted on Mar 08, 2014

  • Ross Berry
    Ross Berry Mar 08, 2014

    Sorry for typo. Meant to say "time to replace fuel pump"


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You have a fuel leak... doh

Posted on Feb 10, 2014


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Bike starts Ok runs for 3 mins then stops. seems to run longer on full throttle, when throttle is shut, bike stops as if running out of fuel

Hi, Raymond the following applies to carbureted also fuel injected models and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Air/fuel mixture screw improperly adjusted.
10. Accelerator pump damaged or not working.
11. Water or dirt in the fuel system, carburetor or filter.
12. Restricted, blocked or kinked fuel line.
13. Fuel tank empty.
14. The gas cap is not venting properly or fuel tank venting system blocked.
15. A failed fuel pump, pressure regulator and or fuel injectors.
16. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
17. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please click on the links below. Good luck and have a nice day.
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1 Answer

Rough running at 4000 rpm

Look for blocked filters. That's the air filter, and also the fuel strainer on the petcock inside the tank. And ensure that there isn't a kinked fuel or breather pipe somewhere under the tank.

Jan 21, 2014 | 1999 Suzuki GSX-R 750 X

1 Answer

Bike runs spits fuel when rpms build

the fuel petcock diaphram might need to be repaled. or gasket that is from gas tank to fuel shutoff valve could be bad.

Dec 27, 2013 | 2005 Hyosung GT 250

1 Answer

2002 h-d softail spits@back fires at low rpms

Hi Anonymous, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals,
ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust vale.
For a prime suspect please visit website below and good luck:
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Apr 11, 2013 | 2002 Harley Davidson FXST Softail Standard

1 Answer

2002 Kawasaki zx7r cuts out between 4 and 6 rpm

check for sticking floats and float valves to sort out the spitting gas and lift the needles by 1 or 2 notches to sort the 4000-6000 problem

Mar 10, 2013 | Motorcycles

1 Answer

Bike spits and sputters at top end

Hi, Johnny and the usual suspects are:
1. Inlet system air leak.
2. Enrichener valve not seated or leaking.
3. Damaged or restricted fuel tank vent system.
4. Restricted fuel supply tract.
5. Dirty or damaged air cleaner element.
6. Plugged bowl vent or overflow.
7. Worn or damaged needle or needle jet.
8. Vacuum piston assembly malfunction.
9. Loose or plugged main jets or passages.
10. Improper float level.
11. Accelerator pumps inoperative.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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YAMAHA YZ250 LC Owner Service Manual
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Dec 17, 2012 | 2003 Yamaha YZ 250

1 Answer

2003 dyna always need to run with choke on sputs and spits at 1500 rpm

Either your carburetor needs cleaning inside or you have a severe vacuum leak. If the bike has been allowed to sit up for a while, the fuel in the float bowl evaporates and leaves behind a gummy residue that plugs up the jets and will not allow fuel through them. The "choke" is actually an "enricher" circuit and it draws fuel directly from the float bowl. By adjusting the "choke", you can get the bike to run. Or, you may have a vacuum leak. There is a hose that runs from the backside of the carb to the VOES switch and the petcock. It may be leaking but it's doubful as if it were you wouldn't have enough vacuum to open the fuel petcock on the fuel tank. I'd suspect either the manifold to carburetor seal where the carb plugs into the intake or the intake to head mounting gaskets. When you take the carb off to clean it, that would be the time to go ahead and pull the intake and replace those gaskets and the intake seal. Make sure you get the intake properly aligned when you put it all back on or you'll wind up with yet another vacuum leak.

Good Luck

Aug 26, 2011 | Harley Davidson FXD Dyna Super Glide...

2 Answers

Where is fuel filter for a 1998 blazer located?

cando997, The fuel filter for the blazer is located under the drivers seat underneath the vehicle. Just follow the fuel lines from the gas tank and in the middle of the fuel line somewhere under the drivers seat is a metal cannister with a fuel line running in and a fuel line running out. This is the fuel filter. I hope this helps in anyway.

Nov 02, 2009 | 1998 Chevrolet Blazer

2 Answers

Shuts off spits and sputters

Check for vacume leaks first. Rubber lines..gaskets to carbs ect. Also remove and blow out your fuel line to tank and change out filter. Hope this helps.:)

Sep 07, 2009 | 2003 Harley Davidson FLHRCI Road King...

1 Answer

2002 speed triple 955i - when opening the throttle from low revs the engine bogs. the fuel map is correct - any ideas?

There can be multiple reasons for this. Low fuel presure is one cause of this.

If you had dropped the bike the impact can loosen the fuel lines inside the fuel tank. Issues with the fuel pump can cause a low fuel presure. In my case the fuel line was loose but still pushing some fuel into the lines. There is no issue a low rpm cause there just enough fuel to run it at 2000 rpm or lower but not enough pressure to run well at high RPM.

Apr 17, 2009 | 2001 Triumph 955i Speed triple

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