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Motor dies when throttle is opened

Idles perfectly, but the motor dies whenever the throttle is opened any amount. There is no fuel odor or anything else that seems out of order.

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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nitro650
  • 93 Answers

SOURCE: My 50cc Qingqi motor scooter was running

Make sure it's not flooding the cylinder and wetting the spark plug small engines tend to do that sometimes !!

Posted on Oct 05, 2009

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millicente_v
  • 23 Answers

SOURCE: dies at half throttle

most common ly it sounds like a crankshaft position sensor, or crankshaft position sensor.... is it throwing a check engine light? if so scan the codes...

Posted on Sep 04, 2012

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1 Answer

My 50cc kymco scooter starts but when you pull the throttle back it cuts out


Hi, Christopher and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
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.
Bike idles perfect but dies when given the slightest amount of throttle 93...
starts idles stalls giving gas Scooter Doc Forum
scooter dies if give it throttle
http://www.scootermasters.com/manuals/kymco%20People%2050-complete.pdf

Aug 27, 2016 | Kymco Motorcycles

1 Answer

My kymco 50cc starts but when you go to throttle it it cuts out can you help


Hi, Christopher and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
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.
http://www.scootermasters.com/manuals/kymco%20People%2050-complete.pdf
scooter dies if give it throttle
starts idles stalls giving gas Scooter Doc Forum
Bike idles perfect but dies when given the slightest amount of throttle 93...

Aug 27, 2016 | Kymco Motorcycles

1 Answer

Why does my ATV bog down and die when I keep the throttle wide open?


If you are lucky, you might just need new fuel filter and the fuel bowl cleaned out, and maybe new air filter. If not so lucky you need carburetor rebuilt. Backfire is usaully caused by engine running too lean ( too much air for the amount of fuel present). Fuel bowls get gunk in them and the fuel needles and fuel jets get varnished up. The accelerator pump gets worn out gaskets and/or bellows and doesn't give the right amount of fuel mist when you accelerate.

Full Choke is indicative of a motor starved for fuel

Mar 04, 2015 | ATVs

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
Bike idles perfect but dies when given the slightest amount of throttle 93...
Yamaha XV250 Services Manual
OEM parts for Yamaha
Yamaha VIRAGO XV250P Owner Manual

Nov 09, 2013 | 2007 Yamaha Virago 250

1 Answer

Yamaha star 250 stalls when the throttle is applied


Hi, Anonymous and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
13. Multi carburetors not in sync
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.
Bike idles perfect but dies when given the slightest amount of throttle 93...
https://yamahaclub.com/forums/topic/15251-idles-fine-but-dies-upon-throttle
Yamaha XV250G Supplementary Service Manual
OEM parts for Yamaha
Yamaha Star XV250X Owner Manual

Oct 20, 2013 | 2010 Yamaha V Star 250

1 Answer

Motor slaat af wanneer gaspedaal toegepast


Hallo , Anonymous voor dit scenario zult u uw dienst / eigenaren manual nodig als u niet de eerste en de beste tool die je ooit gekocht voor uw Yamaha , wanhoop niet vinden , voor slechts $ 0 knt u een andere ??n te downloaden. Voor meer informatie over uw probleem en waardevol "FREE" downloads die je nodig hebt , klik dan op de onderstaande links . Veel succes en een mooie dag verder.
Bike dies when you give it throttle
Bike idles perfect but dies when given the slightest amount of throttle 93...
http://www.pedros.cz/Misc/Virago/XV535_dilensky_AJ.pdf
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/2005/LIT-11626-18-21_1000.pdf

Jul 23, 2012 | Yamaha XV 535 Virago DX Motorcycles

1 Answer

I have a 1985 Yamaha Virago 699cc.. It starts up and idles but dies when I give throttle?


Hi, Timothy and the usual suspects are:
1. Idle speed improperly adjusted.
2. Air fuel mixture screws not properly adjusted.
3. Inlet system air leak.
4. Leaking accelerator pump.
5. Loose low-speed jet.
6. Plugged low-speed jet.
7. Contaminated or plugged low-speed circuit.
8. Enrichner valve/choke 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://viragotech.com/newtech/Only%20starts%20idles%20on%20choke%20dies%20when%20you%20give%20it%20gas%20(SOLVED).htm
Bike idles perfect but dies when given the slightest amount of throttle 93...
Yamaha XJ700N Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xj-owners-manuals

Apr 04, 2012 | 1985 Yamaha XJ 700 X Maxim

1 Answer

Hi I have a 2000 r6 I so how fell off at 15 mph now you can start the bike but any attempt to open throttle bike stops same with any choke


Hi, Janetthurlow and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
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.
2001 R6 Dies when throttle applied
Bike idles perfect but dies when given the slightest amount of throttle 93...
1999 2002 Yamaha YZF R6 Service Manual R6 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Sep 17, 2011 | 2000 Yamaha YZF-R6

1 Answer

1982 mazda 929 MV motor, idles & runs perfect motor is spot on but! it won't stop surging when driven in forward gears 1,2 &3. Have replaced points/distributor/coil/fuel pump/filter but still it...


Sounds like the ECU is struggling to maintain a constant speed when the throttle is open on cretain spots. Does this vehicle have a TPS (throttle position sensor)? If it does then it probably needs to be put on a scope and properly adjusted for continuity. Or could be that some other factory settings have been tampered with on some smog components. Either case, its most likely your air/fuel ratio.

Jul 19, 2008 | 1994 Mazda 929

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