CBR 600F3 1995 - 1998 CBR 600F3 Forum

wont start

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Old Jan 5, 2008 | 01:55 PM
  #11  
shrek's Avatar
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Joined: Dec 2007
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Default RE: wont start

i had a new bat. in her but i took it back and got a new one just in case. when i sprayed starter fluid in the carbs she tried to start where are the injectors on the bike?
 
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Old Jan 5, 2008 | 08:08 PM
  #12  
Asmittie84's Avatar
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From: Atlanta, GA
Default RE: wont start

Injectors & Computers? This thing is carbed 100%. Maybe I'm missing something and if so let me know.

There was a point when my bike wouldn't fire off easily. Turns out my two left(Facing front) cylinders weren't firing. I had the plugs replaced and it did fine then.

Just a thought but could the starter wires be backwards? As in the starter is turning the motor backwards? Just a thought.

Oh. Is your choke cable attached? When mine wasn't attached after freshley cleaned and rebuilt carbs it wouldn't start because I forgot to hook up the choke.

And as I recently found out it's stupid little stuff that can throw your bike off. But is your fuel "ON"? I had a point where I couldn't get my bike to fire and I realized(After removing the gas tank) my fuel was in the off position. I guess you could disconnect your fuel line from before your fuel filter or fuel pump and see if it flows freely. If it doesn't flow freely then put your key in the tank and open it to see if it flows freely then.

Worste case to me would be pilot needles(Needles that control up to I think 3k RPMs) are cloged. But for all 4 to clog seems odd. even with 1 cylinder good it will fire somewhat.
 
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Old Jan 6, 2008 | 02:22 PM
  #13  
CBR13F2's Avatar
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Default RE: wont start

I can just about guarantee its the carbs. If the bike had been sitting for a while chances are the pilots are clogged more so then the main jets. Clean em and you should be good to go.
 
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Old Jan 7, 2008 | 09:57 AM
  #14  
shrek's Avatar
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Default RE: wont start

she was only sitting for about two days but the carbs did need to be cleaned she was running pretty ****y. i just realy didnt want to dig into the carbs.
 
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Old Jan 7, 2008 | 11:44 AM
  #15  
denlimack's Avatar
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Default RE: wont start

You don't have to dig into the carbs! Especially if you don't mind pushing your bike everywhere you go!

The bike needs 3 things to start....air, fuel and spark. Check for spark by pulling the plugs and when they are reattched to the pulg wires hold them against the frame or engine case and turn it over. You should see a nice big fat blue spark on each of the 4 cylinders. If you do not then you may have an electrical issue. If the bike wasn't running well to begin with after sitting sol long you were likely having carb problems then! These things will fire on even 2 cylinders.

The pilot jets are super small (somthing like .016 of an inch) if you have crud in the tank it WILL block them up. Normally if they are blocked it takes more than just dumping in carb cleaner. You have to actually pull the carbs and then the slow jets and clean them manually with carb cleaner and compressed air.

Even if the carbs aren't the issue (and I have said it before I am betting that they are!) they will certainly benefit from a good cleaning after having sat with varnish in them for a year and a half!

Dennis
 
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