CBR 600F3 1995 - 1998 CBR 600F3 Forum

New day, New problem.. input appreciated pics attached

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  #11  
Old 05-01-2014, 09:01 PM
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What about your idle adjustment screw? Have you tried unscrewing it out some?
 
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Old 05-01-2014, 09:06 PM
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Yea, dosent help a thing. It will idle around 7-8k if I adjust it all the way in but as soon as I give it throttle it drops out
 
  #13  
Old 05-01-2014, 09:16 PM
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Well thats about right if its screwed in all the way.
The pics of your plugs show lean.
But 2.5-3.0 turns out are borderline too rich for the F/A screw. If you go beyond that, its time for bigger jets.
Just to be clear, you are counting a turn as a full 360°, correct?
 
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Old 05-01-2014, 09:21 PM
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Yea, I'm counting one turn as a full 360. I re-adjusted them today to 2 1/2 turns maybe a lil less. I did mis count the first time they were about 2 turns out not 3. I am pulling the plugs again as we speak and there dry as a bone. Just a little grey coloring at the ground. And I can wipe it off with my finger to reveal a brand new electrode. Which these are brand new plugs.
 
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Last edited by Medic89; 05-01-2014 at 09:36 PM.
  #15  
Old 05-01-2014, 09:30 PM
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Well its pretty clear that fuel isnt getting to the plugs.
You drained the bowls so the carbs are getting gas but they just arent delivering it to the plugs.
The fact that none of the plugs are wet tells you its something common to all the carbs. Buts that is, is the head scratcher huh?
 
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Old 05-01-2014, 09:35 PM
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Sure is.... I mean its getting something because the bike will run. But its just not up to par by any means, And just to reiterate this all started when i got bad gas from a gas station down the street from me. It had a good amount of water. Bike was running fine. ran out of gas, went and got some, put it in, made it to the end of the street and wham ****ty throttle response.
 
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Old 05-01-2014, 09:38 PM
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What about a clogged fuel filter or a plugged up fuel pump.
Try bypassing either of those and see what happens
 
  #18  
Old 05-01-2014, 09:40 PM
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Originally Posted by hamlin6
What about a clogged fuel filter or a plugged up fuel pump.
Try bypassing either of those and see what happens
Fuel filter was cleaned and bench tested when i cleaned carbs, how would i bypass the pump?
 
  #19  
Old 05-01-2014, 09:47 PM
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Just go from your petcok to the fuel filter.
BTW, the bike running worse with the airbox and filter off is normal. But it is being exagerated by your issue.
 
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Old 05-01-2014, 09:49 PM
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Originally Posted by hamlin6
Just go from your petcok to the fuel filter.
BTW, the bike running worse with the airbox and filter off is normal. But it is being exagerated by your issue.
Gonna try that right now. Ill let you know in a minute what happens
 


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