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Old 10-17-2008, 11:45 AM   #1
azh2000
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HELP!! Carb Problems

Hi everyone,

Having some trouble and wanted to know if someone could send me in the right direction.
I have a ZX9 kawi, I took the carbs off to clean them. (bike would not go over 40) so I got everything back on and put back together but now itís not running right?

It feels like there is a vacuum not on... on the hwy it is pretty good but on the side streets it feels like it missing pretty badly.

Is there anything I can do? Or is this something I am going to put it in the shop for?

Any help or direction would be greatly appreciated..


Thanks everyone!!
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Old 10-17-2008, 11:52 AM   #2
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Need more info.

Can it go over 40 now?

for starters...
Check that the bottom carb connections made a good seal.
Could you have bent float valves? Check levels in each bowl (you need clear tubing for this).
All diaphrams back in clean?

Can you get it to Motorcycles Unlimited?
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Old 10-17-2008, 11:54 AM   #3
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Also, you sure it is a carb issue? All cylinders firing? Did you resync after cleaning?
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Old 10-17-2008, 11:59 AM   #4
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yes it will go over 40 now.... on the freeway I had it at about 120 last night ..no issues but when I got off I feel the missing start to happen..

I have worked on cars before. but not sure what you mean by resync after cleaning?

Bottom carb seal is good..
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Old 10-17-2008, 12:49 PM   #5
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check the main jets and pilot jets..where they taken out and cleaned properly
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Old 10-17-2008, 08:27 PM   #6
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What's a carb
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Old 10-17-2008, 08:30 PM   #7
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take the bowls off, remove jets,floats, clean with b12 chemtool and if its bad enough let it soad in b12 over night
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Old 10-17-2008, 08:42 PM   #8
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clean the pilot and main jets, maker sure you clean them with a torch tip cleaner. had to do it to mine
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Old 10-17-2008, 09:13 PM   #9
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my guest is pilot jets (those for at idle and very small with tiny hole-you may need special flat/slot screw driver to remove them) may still have some clogged/restricted and mixture screws setting (part of synchronize) even all mixture screws have same turns in/out but each cyl. may have different vacumm...so i would double check those and have them synchronize-fine tune. g/l my friend
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Old 10-17-2008, 09:26 PM   #10
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Quote:
Originally Posted by hondarider511 View Post
take the bowls off, remove jets,floats, clean with b12 chemtool and if its bad enough let it soad in b12 over night
do what this guy says
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Old 10-18-2008, 07:07 AM   #11
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also make sure its hitting on all 4 cyl. after its hot put a drop of oil on ea header pipe and if it runs instead of smokes you have a bad plug wire.

or the jets,


but its cheap to replace your old coroded wires and it does make a difference
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Old 10-18-2008, 08:47 AM   #12
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Thanks for every ones suggestions!!!!!!
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Old 10-18-2008, 09:02 AM   #13
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Make sure your boots are not cracked and letting air in, check the air/fuel mixture screws and see what the recommendation is for them...ie 2 1/2 turns out, Are you sure you have everything put back where it belonged and that it is clean... the smallest particle can clog up something. And yes... sync them if you have a carb sync tool.
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Old 10-18-2008, 09:06 AM   #14
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Quote:
Originally Posted by azh2000 View Post
yes it will go over 40 now.... on the freeway I had it at about 120 last night ..no issues but when I got off I feel the missing start to happen..

I have worked on cars before. but not sure what you mean by resync after cleaning?

Bottom carb seal is good..
Since there are 4 carbs on a bike, they have to be synchronized to ensure each carb is operating the same as the others.
This balances out the running of the individual cylinders. It can make a HUGE difference in how a bike runs.
Since it requires a special tool, you might want to pay to have it done. (Although it is very easy to do your self)
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Old 10-18-2008, 10:56 AM   #15
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Can anyone direct me to where to get this carb sync tool? Is that going to cost me alot?

I would like to try to learn how to fix this kind of issue my self before I resort to the shop..... but it dosent lool like I am far from that now!!
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