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Bought another f4i.... but something is weird.

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Old Aug 25, 2008 | 03:20 PM
  #11  
Xuracing's Avatar
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Default RE: Bought another f4i.... but something is weird.

the new one does not have a PC3 my current one does but. does the pc3 control idle at all?
 
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Old Aug 25, 2008 | 03:27 PM
  #12  
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Default RE: Bought another f4i.... but something is weird.

i thought it controled all fuel settings, i have to look into it.
 
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Old Aug 25, 2008 | 06:34 PM
  #13  
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Default RE: Bought another f4i.... but something is weird.

my bike is currently in storage i guess i will try not to worry about it and work on it later. Can you check if the PC3 effects the idle?
thanks!
I really appreciate it!
 
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Old Aug 31, 2008 | 09:15 AM
  #14  
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Default RE: Bought another f4i.... but something is weird.

I had the same problem with my 04 F4i. Im sure when it was brand new it idled at around 2300 when cold and would settle down by the time the temp reached 40 deg (Centigrade).
It now has 25,000kms and the idle is now at 3000 rpm and it doesnt drop till temp gets to 45.

I had a closer look at the cold idle circuit and the only item I see that increases the idle is the mechanical device with two water pipes attached to it. My theory is that the water residue builds up around the temp control spring (assumed its a thermal spring) inside the device and it takes longer and longer for it to react.

Device: When you lift the tank locate the idle cable where it connects to the TB's. Right next to that connection is the cold idle unit I described above. My plan for one weekend (i dont seem to find the time) is to take the unit out and give it a good clean. The other alternative is to play with the adjustment screw on top of the device. But that would be the last resort.
Let me know how you went.
 
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Old Aug 31, 2008 | 05:09 PM
  #15  
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Default RE: Bought another f4i.... but something is weird.

Mine revs when cold until it reaches op temp. Are you saying your current ride doesn't increase the idle at all when it's cold out?
 
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Old Aug 31, 2008 | 05:14 PM
  #16  
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Default RE: Bought another f4i.... but something is weird.

no, it drops back to normal idle once its 50 deg C. just it seems to take longer then previously, and revs higher then previously.
 
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Old Aug 31, 2008 | 09:25 PM
  #17  
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Default RE: Bought another f4i.... but something is weird.

Yes it doesnt increase idle! always the same!
 
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