Question about 2003 Yamaha Royal Star Venture
Posted by Anonymous on
Hi, Anonymous 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. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting ***** set too low.
8. Air/fuel mixture ***** set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
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My KZ only runs choke fully engaged
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Posted on Apr 09, 2016
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Posted on Jan 02, 2017
SOURCE: not idling
The choke allows more fuel into the engine, I would say that you have dirt or bad gas stuck somewhere in your carb, so give it a good and thorough cleaning, including the pump. Also make sure your air filter is clean!
Posted on Jul 09, 2009
did you pull the float pin out and the brass housing that the pin goes in? you may have to clean that and go get some spray brake cleaner with the red straw and blow out all the ports. the reason it will idle with the choke pulled is it shuts off air flow which pulls more fuel to air. without the choke it cant get enough fuel. i would try the bowl again starting with the float and needle. but go ahead and just really clean it all the way through or you will just keep chasing it.
Posted on Jul 15, 2009
SOURCE: only idle with choke on
Sounds like you have blocked or partially blocked pilot jets,
this can happen if bike has been sitting anf fuel has gone stale in bowls or contaminated fuel in tank.
hopefully bike if well serviced or could be caused by air leaks or even tight inlet valve clearance if bike has done a lot of miles
Posted on Jun 24, 2010
SOURCE: I have a 2002 yamaha
This may be a problem with you bike not having the correct amount of fuel when the throttle opens. You will have to inspect the carb. You need to have it cleaned including the jets. The idle jet may be good but the jet for high revs may be dirty. Other than that it could be a fuel filter problem. Check the fuel for debris. Other than that you may need new gas inside. The fuel you are using may have sat there for too long.
Posted on Apr 09, 2011
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