too rich...too lean...how do you know for sure?

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Old Mar 27, 2007 | 04:31 AM
  #11  
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JB1
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Default RE: too rich...too lean...how do you know for sure?

Thanks YYY.GUY and Snal, Im gonna try doing that procedure. I just wanna make sure my bike is running optimal as best I can on my own.
 
Old Mar 27, 2007 | 09:15 PM
  #12  
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Default RE: too rich...too lean...how do you know for sure?

Plug chops are decent indicator of jetting. Its just getting to our plugs to read, clean, reinsert and try again is a bit of a pain.

Anybody got any good, detailed links that go into bike behavior to assist in jetting? Particularly the Pilot and needle jet settings.

Here is a tidbit I ran across but others would be appreciateed:

how to confirm your pilot circuit setting

seems like the most common jetting issue that comes up are pilot circuit related.the following is a sure method to choose the needed changes.

with the bike warm and idling turn the fuel screw in till the idle drops/misses.then go back out till the idle peaks/smooths.

this should happen between 1 and 2.5 turns on a fcr carb and 1 and 3 turns on a cv.

if you end up at less than 1 turn you need a smaller pilot jet.more than 2.5 (or 3 turns on a cv) you need a bigger pilot jet.

choose the appropriate size and retest.
 
Old Mar 27, 2007 | 10:51 PM
  #13  
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Default RE: too rich...too lean...how do you know for sure?

found this in the electronic ether, dont know if it helps but here it is,
http://members.aol.com/roundr1/CVK40.html
not for the right size carb i know but the same principles apply.

Simon L
 
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