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post #1 of 25 (permalink) Old 04-07-2007, 10:22 PM Thread Starter
 
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zx6r tune up

I just changed the plugs, oil, and air filter on my 00 zx6r 11k miles. Is their anything else i need to look for? How often should i have the carbs cleaned/rebuilt? I bought it last June with 6,800 miles on it. And i changed the plugs and oil on it only.
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post #2 of 25 (permalink) Old 04-08-2007, 02:40 AM
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The carbs should be cleaned and sync'ed. Further you should have the fork oil, bushings, and seals replaced. Might also want to swap out the coolant for some Engine Ice. And if you're doing all of that... replace the brake fluid with some DOT4 synthetic.




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post #3 of 25 (permalink) Old 04-08-2007, 08:51 AM Thread Starter
 
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I appreciate it and some of that seems too complicating for me personally so i will call my mechanic.

Thanks
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post #4 of 25 (permalink) Old 04-09-2007, 02:32 PM
 
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really, if you get a repair manual, its VERY simple. why pay someone else to do something you could learn how to do yourself and save SO MUCH money? I've NEVER had mechanics do my repairs, I do everything to my own bike. but then again, my mentality is if you're gonna own it you're gonna know how to fix it too.
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post #5 of 25 (permalink) Old 04-09-2007, 08:45 PM Thread Starter
 
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That is true i just downloaded a free manual from twf! It does simplify things but there is alot of adjustments and screws on the carbs! Besides my mechanic said he would clean and adjust my carbs for $50.00 since I send alot of work his way!
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post #6 of 25 (permalink) Old 04-09-2007, 09:28 PM
 
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well, I guess you cant argue with that price. carburetors really are incredibly simple, once you grasp the concept of how they work. the only two screws I know of on them that adjust anything are the fuel/air mixture screw on the bottom, and the screws to sync each carb with all the others.

to show you how simple a carburetor really is, here's a pic of a set I've got in my closet that I edited a little to show you the simplicity of them. the fuel air mix screw is the recessed one in that little hole, not the wide phillips head screw.
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post #7 of 25 (permalink) Old 04-10-2007, 02:26 AM
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Carbs are only complicated till somebody explains them to you. But each brand of carbs are different.




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post #8 of 25 (permalink) Old 04-10-2007, 06:19 AM
 
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Right you are there Gas Man.

once you grasp the basics of carbs, its nothing complicated. I mean all they are is pieces of metal and rubber that measure how much fuel is delivered to the engine.
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post #9 of 25 (permalink) Old 04-10-2007, 08:43 AM
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So what does the sync screw actually do? I've only ever worked on one carbuerator at a time Does it just control where each butterfly is in relation to the other carbs? Balancing the air/fuel flow to each cylinder?

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Right you are there Gas Man.
once you grasp the basics of carbs, its nothing complicated. I mean all they are is pieces of metal and rubber that measure how much fuel is delivered to the engine.
Should be meter- not measure. But carbs control the amount of fuel going in, they don't keep track of it.

Someone PLEASE correct me if I'm wrong...

It's a possibility
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post #10 of 25 (permalink) Old 04-10-2007, 10:07 AM
 
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By synking the cylenders you are equalizing each cyl. attempted rotational speed. So that one cyl. isn't trying to speed up another. Causing a lack of power and sluggish throttle response. This can also cause an overheating of single cylenders.
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post #11 of 25 (permalink) Old 04-10-2007, 02:34 PM
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By synking the cylenders you are equalizing each cyl. attempted rotational speed. So that one cyl. isn't trying to speed up another. Causing a lack of power and sluggish throttle response. This can also cause an overheating of single cylenders.
Sooo... It balances the fuel/air flow to each cylinder....?












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post #12 of 25 (permalink) Old 04-10-2007, 02:35 PM
 
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basically, the purpose of the synchronizing screw is to synch each carb with the other 1-3, depending on how many cylinders your bike has. if your carbs arent synched properly, poor running, crappy throttle response, and general lack of power can be noted. when they're synched, you will enjoy a crisp and strong responce when you twist the grip.
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post #13 of 25 (permalink) Old 04-10-2007, 02:38 PM
 
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Sooo... It balances the fuel/air flow to each cylinder....?
in as many words, thats EXACTLY the purpose.
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post #14 of 25 (permalink) Old 04-10-2007, 05:29 PM Thread Starter
 
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So you don't need any special tools? I might try to watch him and see exactly what he does and try to get some answers from him. So if it is doing one thing what is needed to correct it. He is a pretty cool guy. Also all i have is a slip on. If I put a jet kit in would that screw things up?
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post #15 of 25 (permalink) Old 04-10-2007, 06:34 PM
 
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maybe, maybe not. I dont imagine it'd screw up anything. if you're going with a stage one kit, it might give you a tad more power. the only real special tool you need is the vacuum gauge set that is used to synch all 4 carbs properly.
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post #16 of 25 (permalink) Old 04-10-2007, 06:38 PM Thread Starter
 
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I have access to a stage 1 for really cheap thats why i asked. Thanks
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post #17 of 25 (permalink) Old 04-11-2007, 10:11 AM
 
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If you get exhaust mods, you should get jet sets to match. keep that in mind for future mods.
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post #18 of 25 (permalink) Old 04-11-2007, 03:20 PM
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Right you are there Gas Man.

once you grasp the basics of carbs, its nothing complicated. I mean all they are is pieces of metal and rubber that measure how much fuel is delivered to the engine.
Well it can get complicated. For example my S&S (one of theonly truely american carbs) uses just 1 butterfly. In the jap carbs they can use 1 buuterfly or 1 slide or 1 of each. Further, on my S&S there is a air bleed jet, and 2 fuel jets. Then a air/gas mixture adjustment. Where as on some jap bikes when you think you are adjusting the gas mixture with the gas/air mixture screw. All you are actually doing is adding more air.




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post #19 of 25 (permalink) Old 04-11-2007, 09:11 PM
 
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good point there Gas Man. I mostly mess with jap bikes, so I wouldnt know about american stuff other than Ford trucks.
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post #20 of 25 (permalink) Old 04-12-2007, 02:29 AM
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Carbs are just a touchy subject with most people cause they don't know them or how they work. I mean they know they mist gas and air into the motor but they don't understand how it works. That can be scary.

but nothing some time, patience, a level head when it comes to wrenching, and a good service manual won't help!

I know I have learned more about my S&S carb then any other carb ever. But its been from tinkering with it...

Got to get over the fear of F'in it up. I look at it this way.

You have 1 of 2 options.

1. Pay some douche $85 a hour to work on it and possible F it up.

or

2. Work on it yourself and you'll either F it up or get it right. If you F it up then you can pay some tool bag to F it up some more, charge you $200 and send you home thinking he fixed it.

Lets just hope you don't F it up!




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