Question about Yamaha V Star 1100 Classic Motorcycles

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2006 v star 1100 classic w/ vance + hines slip on exhaust. I get popping at idle and decel (i'm thinking it just needs to be rejetted). The big problem, is when the bike has already warmed up (at least 5 minutes of driving), as soon as i pull in the clutch, the RPM's shoot up. I'm not sure how high they get, but it is definitely above what should be the normal idle. When cold/warming-up, the bike idles right where it should, so I'm hesitant to adjust the idle knob on the left side of the bike. Also, after about 15 miles of city riding, I noticed that the yellow engine light would turn on when I was sitting at a stop light (meanwhile, my RPM's are higher than they should be). As soon as the light turned green, I would take off, and the engine light would turn off. I'm thinking that the bike is starting to overheat when I'm stationary for extended periods of time, caused by the raised RPMs. Does anyone know what might be causing my bike to idle high once it gets warmed up?

Posted by Mitch C on


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  • Yamaha Master
  • 1,562 Answers

The popping at idle and deceleration (when the throttle is in the idle position) could be a lean mixture at idle.
A lean mixture sitting at idle for a long light would cause the engine to run hot.
Also, as the engine reaches operating temperatures, the idle will pick up.

Posted on Oct 08, 2013

  • 3 more comments 
  • Mitch C Oct 08, 2013

    thanks for the input! would adjusting the idle screw help with this? or is re-jetting the only solution here?

  • Strech
    Strech Oct 08, 2013

    Most bike carbs' have an idle mixture screw, though newer ones are usually covered up with an aluminum (or other) plug, to try and keep you from messing with it. If it's easy to get to, when warm (and idling too fast) there should be an adjustment that adjust the idle speed on both carbs at the same time.

  • Strech
    Strech Oct 08, 2013

    Look at this diagram:

  • Strech
    Strech Oct 08, 2013

    Part #14 is the idle mixture screw, under the plug (#37). Item #43 controls the idle speed on both carbs.

  • Mitch C Oct 08, 2013




5 Related Answers


  • 1 Answer

SOURCE: Engine dies after quad is warmed up (10-15 minutes)

Just a hunch, had this happen to a bike of mine years ago, could be the piston rings are gettting ready to go(wore down). What happens is when the quad is cold the rings expand tight into the cylinder walls allowing it to get full compression and run ok. When it heats up they shrink allowing the slightest amount of give which in turn will cause you problems similar to what your describing.

Posted on Jun 10, 2009



  • 2 Answers

SOURCE: Rpms speed up faster then bike does. Sounds like clutch slip.

You can adjust it by slackening the cable...unless it has hydraulic operation....Otherwise get it replaced before you do more clutch dust and debris in the oil, so dont forget the oil and filter change too.

Posted on Jul 22, 2009


Arnie Burke

  • 6480 Answers

SOURCE: Engine cuts out with clutch engaged.

is your bjke water cooled could have aproblem with that-its gettin hot-if air cooled carb may neede cleaning. the clutch is ok but indicates to me that that carb needs a low speed jet adjust also-do u have a clymer manual!!

Posted on Aug 04, 2009


  • 1 Answer

SOURCE: Backfire and popping after installing vance & hines longshots

Let me know via [email protected] if you get a solution, Mine is doing similar but mine is holding back at half throttle to, Wont rev high at all just chokes under load

Posted on Oct 20, 2009


Adrian Ahrens

  • 425 Answers

SOURCE: Hesitates and backfires through the exaust when accelerating

Sounds as if your timing is not quite right. You need a manual, but The best I can offer is a 98: , it may help, but if you only have 1100 miles on it, I would be taking it to a qualified mechanic to be fixed. Up to you.

Posted on Jan 19, 2010

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You MUST rejet the bike!!! When cold or warming up the bike should be running in a rich mode. After it warms up you are running lean. Cheaper to rejet than replace "hole in the top of pistons".
To help prevent more problems in the future, find who ever told you that rejetting was not required, turn them around, take your right foot and kick their @#$. This could save you lots of grief and $$ in the future.


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Backfire and popping after installing vance & hines longshots

Let me know via [email protected] if you get a solution, Mine is doing similar but mine is holding back at half throttle to, Wont rev high at all just chokes under load

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