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2007 Qian moped start and Idles ok when excellerating engine bogs out!

When trying to accelerate it wants to loose power and acts like its not getting any gas but I just put new filters on it and cleaned the carb!

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My 50cc scooter(chinese) hesitates at full throttle, almost like it wants to stall and then it kicks back in. Could this be a problem with the carburetor valve?


Hi, Randy 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 blue links below. Good luck and have a wonderful day.
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Mar 24, 2017 | Motorcycles

1 Answer

2010 Hyosung Gt250r carb flooding when I try to ride but idles good only on start up what's causing this?


Hi, Chris and the usual suspects are:
1. Dirt or other foreign matter between float valve and its seat.
2. Float valve sticking.
3. Float valve and/or valve seat is worn or damaged.
4. Float misadjusted.
5. Float cracked, leaky or damaged.
6. Excessive "PUMPING" of hand throttle grip.
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http://files.hyosungmotorsusa.com/GT125_250_Service_Manual.pdf https://www.alpha-sports.com/Parts/H_GT250R.htm
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Feb 18, 2017 | 2010 Hyosung GT250R

1 Answer

Installed new Nikki carb but now it's like my bike doesn't have any power it's revving up nice but when driving it has no power


Hi, Sarel and the usual suspects are:
1. Idle speed improperly adjusted.
2. Inlet system air leak.
3. Damaged or restricted fuel tank venting system.
4. Dirty or damaged air cleaner element.
5. The accelerator pump is inoperative.
6. Vacuum piston assembly malfunction.
7. Enrichener valve is not seated or leaking.
8. Restricted fuel supply tract.
9. Plugged bowl vent.
10. Loose or plugged fuel and air jets or passages.
11. Improper float level.
12. Worn or damaged needle or needle jet.
13. Loose or plugged main jets or passages.
For more information about your issue and valuable "FREE" downloads that you will need please click on the websites below. Good luck and have a nice day.
http://www.scootertherapy.com/runslowpage.html
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1 Answer

Poulan problems


Turn the low side adjustment out 1/4 turn and keep doing that till it stops.

Aug 24, 2014 | Garden

1 Answer

Acceleration problem


Could be a clogged fuel filter, could also be a slight crack in the throttle body gasket. get a spray bottle with water in it, set it to mist, while the vehicle idles, spray around the base of the throttle body, if it bogs down replace the throttle body gasket. Just curious, was it doing it before you changed the plugs and wires? If not make sure you have the firing order correct.

Dec 24, 2013 | 1997 Nissan Pickup

1 Answer

2007 yamaha virago 250 starts, idles ok, bogs at acceleration


Hi, Anonymous and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Intake system air leak.
4. Vacuum piston malfunction.
5. Pinholes or torn diaphragm.
6. Accelerator pump leaking or no output.
7. Plugged bowl vent or overflow.
8. Fuel level in bowl too low.
9. Restricted fuel supply passages.
10. Plugged jets or passages.
11. Worn or damaged needle or needle jet.
12. The enrichner valve not seated or leaking.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.starbikeforums.com/forums/18-engine-work/5238-engine-bogs-past-1-4-throttle.html
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Nov 09, 2013 | 2007 Yamaha Virago 250

1 Answer

2007 Qian moped start and Idles ok when excellerating engine die.


Change the fuel filter.Still does it,adjust idle mixture screw to fastest idle,the adjust throttle to where should be at idle.

Oct 01, 2013 | 2008 TGB Keywest

1 Answer

Why won't my moped accelerate to it's full speed capacity?


Check the filter for restriction and possible debris in carburetor.

Aug 20, 2017 | Motorcycles

1 Answer

Yamaha 2001 ttr 250. Bogs above half speed, under load


I have the same problems with my 1999 TTR 250, were you able to find out anything?

Walt
goalhawk@hotmail.com

May 04, 2010 | 2002 Yamaha TT-R 250

2 Answers

2001 yamaha ttr 250, starts, idles ok, bogs at acceleration


Has the bike been stored for any long length of time?
old fuel in the carburetor will turn to a varnish like residue blocking the jets,or possibly water in the carburetor.

May 03, 2010 | 2002 Yamaha TT-R 250

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