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05 yamaha raptor 350 it starts and idles fine with the choke on but when i turn choke off or try to give it thottle it just dies Any help out there

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  • Expert
  • 287 Answers

Sounds like a vacume leak check blocks where carb mounts to cylinder for cracking or dryrotting

Posted on Mar 19, 2014

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6 Suggested Answers

6ya6ya
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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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vortash
  • 431 Answers

SOURCE: Yamaha 660 raptor dies when choke is tuned off

hello I am Vortash .. I would say your problem is either blocked idler jets or incorrect fuel mixture ( Air to fuel not correct ) take the bike to your local garage to use their air line unless you have a compressor of your own remove the fuel feed tank side and blow it through with the airline if this don't cure it you will probably need to have the carbs tuned to manufacturesr spec's , If you are more mechanicaly minded strip the idler jets out pass a fine strip of wire through them and replace .You can also get this problem if you have an air leak on the maniflod or the carb bowl etc hope this helps regards Vortash

Posted on May 14, 2009

  • 12 Answers

SOURCE: Yamaha 06' V-star 650 idle prolbem!

Fuel filter is located near the fuel shutoff valve within three inches. It is inline between the shutoff valve and the fuel pump (towards tank).

The fuel circuit is: Tank/Fuel Pump/Fuel Filter/Fuel Shut-off Valve/Carbs.

You first step is to check for fuel delivery to the filter. Make sure the bike is cool and no iginition sources are nearby. Disconnect the inlet line at the filter and turn key on and crank engine (to trigger fuel pump.) Do not try and start at this time (choke off).

If fuel is adequate to the filter, check the filter by blowing through it, it should easily pass air. Replace filter if questionable.

Next reconnect the fuel lines and remove float bowl drain plugs in the back of the carbs (2 per carb). If with key on and cranking fuel pours out of these ports then you probably have clogged fuel jets. If not then the float bowl needles / pipes could be plugged with varnish from dried fuel. You can try spraying carb cleaner into the fuel inlet to clear the varnish and then retest. Careful not to spray carb cleaner on yourself (wrap straw with a rag).

If you have good fuel flow to the carbs and bowls you probably have varnish plugging the jets. You should remove the carbs and clean them thoroughly.

Hope this helps,

Kal

Posted on May 18, 2009

co7196
  • 3433 Answers

SOURCE: yamaha tw200 2003 dies giving gas. idles fine. wtf!

You are getting enough fuel. ck for trash in your carbs

Posted on Jul 07, 2009

  • 12 Answers

SOURCE: drz 400 sm starts but i cant give it any gas or it dies

Can you slowly increase the revs? It sounds like an accelerator pump or debris in the carb.

Posted on Jul 31, 2009

RonInFla
  • 86 Answers

SOURCE: my 2007 YAMAHA 350 raptor is not starting on the battery

take the battery back...it's bad

Posted on Apr 27, 2010

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Hi Mike,
You will find that there is a problem with the carbie. It runs with the choke on because the choke engages the "enricher" circuit. The idle circuit is different a different circuit inside the carb. When just crack the throttle on, you use the pilot circuit, and then main jet with more twist of the grip. You will need to completely strip the carb, remove all jets, spray carbie cleaner throughout, and blow out all capillary tubes and holes inside the carb with compressed air. Pay particular attention to the fine holes inside the venturi near the butterfly valve. You may need to use a fine piece of wire, like a guitar string to open up any that are clogged.
There is not much else that will cause the symptoms you have. Check for air leaks about the inlet manifold also, spray some carbie cleaner about the manifold connections boots, the revs will change when it sucks up the cleaner through the leak.
Happy to talk to you more about it.
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