Question about 2010 Yamaha V Star 250

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Yamaha star 250 stalls when the throttle is applied

Posted by Anonymous on

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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
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Posted on Dec 17, 2016

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Posted on Jan 02, 2017

ollie reece
  • 1167 Answers

SOURCE: i have a 1991 yamaha yz 250 it starts then shuts off

change the pkug first buy a br8eg plug off ebay and see how this goes get back to me also are you using the choke on start up

Posted on Sep 29, 2009

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