07-24-2009, 02:36 PM
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Senior Member
Join Date: May 2007
Location: Champaign, Illinois
Posts: 4,561
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Re: carb runing lean
Quote:
A downloadable service manual is available on here. What leads you to believe it is lean? Even if you get to the idle mixture screw, it doesn't have much range of adjustment. Does it have a stock air filter on it? That is an important part of the mixture setting.
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07-25-2009, 10:16 AM
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#4 | |
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Senior Member
Join Date: May 2007
Location: Champaign, Illinois
Posts: 4,561
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Re: carb runing lean
Quote:
If you can tell by the way an engine RUNS that it is a lean mixture (versus several other things that might make it run rough), then you might have a promising career as a mechanic !! :roll: Unlike most air filters, on the GZ, the air comes into the middle of the filter and the outside of the filter and the whole air box has a slight vacume because of the filter restriction. If you have done anything to make an air leak in the air box, you need to seal that back up because it is letting in unfiltered air. That includes the plug on the bottom of the air box drain hose. If anything you have done FORCES more air through the filter, then you need to see the threads on here about doing a jetting and needle change and idle mixture adjustment. Like it's name, the idle mixture adjustment will only have a noticeable effect at or near idle speed. Above that, other things come into play. At what engine speeds do you notice the problem ??
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07-25-2009, 06:22 PM
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#5 |
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Junior Member
Join Date: Jul 2009
Location: Inverness FL
Posts: 5
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Re: carb runing lean
Its not at what speed but at high rpm and i am good with engines but better with cars. This is one of the first bikes i have worked on and the first 4 stroke. I have worked on more 2 strokes so you can see why im askin for help.
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07-25-2009, 06:31 PM
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#6 | |
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Senior Member
Join Date: May 2007
Location: Champaign, Illinois
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Re: carb runing lean
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I quit.
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07-25-2009, 11:14 PM
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#7 |
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Junior Member
Join Date: Jul 2009
Location: Inverness FL
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Re: carb runing lean
sorry i missed engine i just saw speed
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08-29-2009, 11:48 PM
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#8 |
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Junior Member
Join Date: Mar 2009
Location: Springfield, IL
Posts: 12
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Re: carb runing lean
[quote="Easy Rider"][quote="gsxr750dude33"] That includes the plug on the bottom of the air box drain hose.quote]
What is the air box drain hose. I noticed, for the first time this afternoon, a small, narrow black hose running from "something" (can't remember now what it's attached to and will try to post pics another time) just under the seat and just hangs down and the other end is not attached to anything. Can anyone tell me that might be? LIke I said, I'll try and post pics tomorrow. They are on my phone and I need to transfer them to a computer I can save them on first.
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08-30-2009, 05:16 AM
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#9 | |||
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Senior Member
Join Date: Nov 2008
Location: Tenerife (Spain)
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Re: carb runing lean
Quote:
The hose hangs down from "just under the seat" because that's where the air filter is! :whistle:
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08-30-2009, 01:28 PM
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#10 |
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Junior Member
Join Date: Mar 2009
Location: Springfield, IL
Posts: 12
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Re: carb runing lean
alantf,
Are you saying there should be something at the "bottom" of the hose? There is a clamp up by the air filter, holding it in place, i presume...but nothing at the end of the hose. Would i need to call my suzuki dealer to get this plug? or "create" one? I guess if there's no plug on it, it may just be draining into oblivion?!?! Thanks for the help!! Here's the pics I took... (I have no plug at the bottom of the hose)
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