fuel mixture adjustment

FZR600 Forum

Moderators: Site Director, FZR Forum Moderators

Post Reply
User avatar
shredex
2000+ Posts
2000+ Posts
Posts: 2768
Joined: Sun Sep 07, 2008 10:40 am
Location: Holiday, Florida
Contact:

fuel mixture adjustment

Post by shredex »

Im about to go out and do the adjustments to my fuel mixture screws.
do I screw the screws in all the way, then out 2 full rotations? or 4? or what?
Image
User avatar
shredex
2000+ Posts
2000+ Posts
Posts: 2768
Joined: Sun Sep 07, 2008 10:40 am
Location: Holiday, Florida
Contact:

Re: fuel mixture adjustment

Post by shredex »

turned fuel mixture screws out 2 full rotations.
no bogging or delay in throttle response.
Image
User avatar
reelrazor
Wrench
Wrench
Posts: 1658
Joined: Sun Oct 05, 2008 8:19 am

Re: fuel mixture adjustment

Post by reelrazor »

fine tuning from there...

As you get leaner, the idle should climb a but, to the point you have to turn the idle down..

Usually getting to the leanest clean idle ( fully warm) wil mean the least throttle opening at idle.

1/4 turn out (richer) from there is a great place to be.

Tune for throttle reponse with the needle at that point.
http://www.michiganmobileservice.com/


Image

“A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.”-Douglas Adams

http://www.youtube.com/user/reelrazor
User avatar
shredex
2000+ Posts
2000+ Posts
Posts: 2768
Joined: Sun Sep 07, 2008 10:40 am
Location: Holiday, Florida
Contact:

Re: fuel mixture adjustment

Post by shredex »

so I should turn mine out 1/4 more???
it seems that I need to put on the choke each time I start it now.
Image
User avatar
shredex
2000+ Posts
2000+ Posts
Posts: 2768
Joined: Sun Sep 07, 2008 10:40 am
Location: Holiday, Florida
Contact:

Re: fuel mixture adjustment

Post by shredex »

update.
when I let the throttle back in the bike seems to make a boging sound.
it just doesnt have a clean sounding desseleration.
any clue if this could have to do with my fuel mixture adjustment?
Image
User avatar
reelrazor
Wrench
Wrench
Posts: 1658
Joined: Sun Oct 05, 2008 8:19 am

Re: fuel mixture adjustment

Post by reelrazor »

shredex wrote:update.
when I let the throttle back in the bike seems to make a boging sound.
it just doesnt have a clean sounding desseleration.
any clue if this could have to do with my fuel mixture adjustment?
You're saying it sounds like it wants to die(revs drop below idle?) then catches and resumes idling? Or falls off and you have to throttle it to get the idle back?

If you let the throttle snap shut, what happens? a) does it come back down to idle fairly quickly? b) does it creep back down or c) it overshoots idle and almost stalls?
http://www.michiganmobileservice.com/


Image

“A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.”-Douglas Adams

http://www.youtube.com/user/reelrazor
User avatar
shredex
2000+ Posts
2000+ Posts
Posts: 2768
Joined: Sun Sep 07, 2008 10:40 am
Location: Holiday, Florida
Contact:

Re: fuel mixture adjustment

Post by shredex »

it goes with the speed im going. it wont really be back to idle until im stopped or close to it. or if I have my clutch engaged.

it doesnt sound like it wants to die, it just doesnt sound smooth when it slows. its kind of a boging bubbling sound and I cure the sound by accelerating a little. but once i let the throttle back in a little it will do the bog bubble sound and not the smooth sound it makes when accelerating
Image
User avatar
reelrazor
Wrench
Wrench
Posts: 1658
Joined: Sun Oct 05, 2008 8:19 am

Re: fuel mixture adjustment

Post by reelrazor »

pick your needles up one click. (go down one slot on the clip)

Report back
http://www.michiganmobileservice.com/


Image

“A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.”-Douglas Adams

http://www.youtube.com/user/reelrazor
User avatar
shredex
2000+ Posts
2000+ Posts
Posts: 2768
Joined: Sun Sep 07, 2008 10:40 am
Location: Holiday, Florida
Contact:

Re: fuel mixture adjustment

Post by shredex »

when I let the throttle out all the way, then it will desselerate cleanly.
its just when lets say im going 45 and I let the throttle in slightly to go 40. THATS when it makes the bubble kinda sound
it might be normal though...
Image
Post Reply