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carb/air/fuel screw adj ?

Started by turbocamino, May 13, 2015, 03:52:41 PM

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turbocamino

May 13, 2015, 03:52:41 PM
  Attempting an idle/air/fuel adjustment...been reading our files regarding 'blip' test...mine does seem to dip down to 900 and them back to the desired,1100rpm...that said ... does this indicate  a bit rich or lean?  thanks
89 FJ1200 saphire.blu owned 8-9 years.  By far the most satisfying of them all. Constant tinkering got me the best bike you could ever want.

Mark Olson

#1
May 13, 2015, 04:29:29 PM
Quote from: turbocamino on May 13, 2015, 03:52:41 PM
  Attempting an idle/air/fuel adjustment...been reading our files regarding 'blip' test...mine does seem to dip down to 900 and them back to the desired,1100rpm...that said ... does this indicate  a bit rich or lean?  thanks

Rich = drop below idle after blip - try 1/2 turn in

Lean = hanging above idle after blip- try 1/2 turn out.

This works real good , check it out.    http://www.factorypro.com/tech/carbtun.html
Mark O.
86 fj1200
sac ca.

                           " Get off your ass and Ride"

turbocamino

#2
May 13, 2015, 07:43:55 PM
great ..glad i asked ..i was thinking it may be lean  ..wrong! ...  thanks for the tip and the link!
89 FJ1200 saphire.blu owned 8-9 years.  By far the most satisfying of them all. Constant tinkering got me the best bike you could ever want.

FJ_Hooligan

#3
May 13, 2015, 08:24:15 PM
If you read about the blip test then follow the process to by certain you're adjusted correctly. The last time I adjusted my carbs the response was opposite that described above. When I turned them too far in I got a bog followed by a drop in RPM. Too far out and the RPM would hang.

That's why I always encourage people to follow the full test to make sure you get the best results. Only takes a few more minutes. Why guess when you can be sure they are adjusted correctly?
DavidR.
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