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Any help please 2007 Zongshen zs250-5 cruiser will only idle with choke on

I have a Zongshen 2007 250-5 cruiser and it will idle with choke on but can rev it or it stops and need vacuum hose diagram and petrol, please

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  • Zongshen Master
  • 57,710 Answers

Hi, Wazza and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
6. Float level too low.
7. Carburetor bowl vent line clogged/blocked/pinched.
8. Idle adjusting screw set too low.
9. Air/fuel mixture screw set too lean.
10. Idle port, transfer ports, slow air jet clogged.
11. Slow fuel jet clogged.
12. Faulty fuel pump.
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.
2007 Zongshen 250 5 fuel and vacuum line routing Google Search
http://www.miniriders.com/carby-and-tuning/32092-250-thumpstar-wont-idle-without-choke.html
http://www.family-motorsports.net/GY6-50cc-150cc.pdf
http://absolutelyscooters.net/service-manuals.html
ZONGSHEN ZS250GY 3 EFI Maintenance Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Jun 18, 2017

Testimonial: "it aint helping its a zongshen 2007 zs 250-5 crusier"

  • 3 more comments 
  • Gregg Mahin
    Gregg Mahin Jun 18, 2017

    I know what it is, those are the only manuals that come close to your application if you're not satisfied with my answer, go spend your money at your local Zongshen Dealership. Good luck

  • Wazza Hawes Jun 18, 2017

    nah im looking into what u said like it starts first pot with choke on but i go to rev it and it stalls and im finding a hose of the carby that aint connected to anything

  • Wazza Hawes Jun 18, 2017

    a young lad had it was trying to fix it i think he has changed hoses around so just trying to figure it out thank you for ur help it is appreciated

  • Gregg Mahin
    Gregg Mahin Jun 18, 2017

    The hose coming off the carburetor that doesn't go anywhere is not supposed to go anywhere it is a vent line and should be free of any kinks or clogs and is supposed to run down pass the frame about 1 inch loosely secured with tie wraps. My gut tells me the pilot circuit in the carb is clogged. Watch the video below.
    http://lanesplitter.jalopnik.com/cleanin...
    https://www.youtube.com/watch?v=neaBAYm8...

  • Wazza Hawes Jun 18, 2017

    ok ty that makes sense as hose was tied to frame ty

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