CBR 600F3 1995 - 1998 CBR 600F3 Forum

Carb help!!!!!!!!!!!!!!!!!!!!!!!!!

Old Jun 16, 2009 | 08:36 PM
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Default Carb help!!!!!!!!!!!!!!!!!!!!!!!!!

Ok, so i have synced my carbs before on my 95 but now i at a point where im F*&$ing pissed.... I made a set of carb syncs few days ago and noticed that the hoses were not a tight fit and were giving me some wrong readings, and right after when i tryed to adjust for the werid readings i cant even get my bike to start now!!! I fixed the lines so they are tight now but now at most the bike acts like its going to start but doesnt! Is there anybody who knows how or lets say i turn all the adjusting screws one way and so many another that it should be close enought to just start?!?!?!!?! HELP!?
 
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Old Jun 17, 2009 | 12:32 AM
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does it crank? not really sure what to say...maybe it's not getting gas...im not sure if vacuum is needed for gas to go into the carb and into the cylinder...check if the carb's inside (the round cyclinder) feels wet from gas. im not a pro but ill start with that...


check for gas, ignition, air, i dont know what else...
 
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Old Jun 17, 2009 | 08:42 AM
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It's really hard to get it to the point where it won't even start. Once it's that far, you can usually just see with your eyes that things aren't in sync. I'd say something else is wrong here.

Make sure all your seals are good, the carbs are ALL pushed ALL the way don on the engine, and all your clamps are tight. Make sure you have all the hoses in the right places. After you put the carbs on, give it time to let gas flow back into the bowls.
 
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Old Jun 17, 2009 | 05:41 PM
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no carbs are tight, and it is getting fuel for sure.
 
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Old Jun 17, 2009 | 05:47 PM
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also i have not taken carbs off , just was syncing... and it is cranking, acts like it wants to start with out starter but then just dies..
 
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Old Jun 17, 2009 | 05:54 PM
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did you clean the carb jets? check for spark too..
 
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Old Jun 17, 2009 | 07:01 PM
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Well i got her to run, at first mainly using the choke. Now i have it running on its own but still sputters , really bad when reving few thousand rpm . almost sounds like a damn 2 cylinder ninja . Tomorrow going to buy some new plugs, maybe i fould one or two out.
 
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Old Jun 18, 2009 | 09:41 AM
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Why don't you try coming at it from the weird readings? It sounds like you're trying to write them off as invalid, when they really may be telling you waht's wrong.
 
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Old Jun 18, 2009 | 11:09 AM
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It sounds like there are two things that are going on, the bike isn't running on all cylinders or some of the intake hoses are connected incorrectly. When the bike is running, put you hand close to each individual header pipe. If it's cool enough to were you can actually touch it... that cylinder isn't firing. If you determine that all cylinders are firing, then double check your air intake hoses. I've had those connected incorrectly and it made my bike run like a lawn mower.
 
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Old Jun 18, 2009 | 01:21 PM
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Originally Posted by marc0011
some of the intake hoses are connected incorrectly.
That's an excellent point. You had to disconnect several hoses to sync the carbs, and it's very easy to put them back the wrong way.
 
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