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Cold Start Idle High?

  #1  
Old 11-02-2011, 09:36 AM
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Default Cold Start Idle High?

On idle in 20* weather first startup my f4i idles around 2800-3000rpm. Is this too high? Once warmer it settles around 1200rpm.
 
  #2  
Old 11-02-2011, 10:02 AM
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sounds about right
 
  #3  
Old 11-02-2011, 12:07 PM
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Originally Posted by north View Post
On idle in 20* weather first startup my f4i idles around 2800-3000rpm. Is this too high? Once warmer it settles around 1200rpm.
That's where it should be.
 
  #4  
Old 11-02-2011, 05:56 PM
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I noticed that to. It's my foray winter with my bike, but makes sense, just warming the bike up.
 
  #5  
Old 11-02-2011, 07:32 PM
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Everyone in my complex hates my devil exhaust when it warms up at 6am lol.
 
  #6  
Old 11-02-2011, 10:14 PM
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these bikes have an automatic choke so yes it is going to idle high when its cold and then when it gets to about 95-100 degrees F the idle will come down.
 
  #7  
Old 11-03-2011, 12:11 AM
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the high idle is normal, its operated by the wax unit which is heated by coolant to allow a gradual idle drop as the motor warms up. totally normal, admittedly kind of irritating, I HATED this on my samurai.
 
  #8  
Old 11-03-2011, 03:41 AM
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It is normal.


They have a wax idle unit, this is basically a wax filled cylinder with a finger that pokes out and opens the throttle slightly. Coolant flows around the wax part and when hot enough the wax melts, the finger retracts and your idle drops.
 
  #9  
Old 11-03-2011, 11:34 PM
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Highest my bike gets is about 1900rpm, but it doesn't get below 40* here very often
 
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