I recently rejetted to 20/65/142.5 with a K&N Lunchbox and Stock Exhaust(Drilled). Prior to this I did a horrible rejet of 17.5/75/132.5 with bogging at 6k.
My current problem is when I first start it idles wherever I set the idle screw(1400rpm), once I rev the engine it will hang at 5000-6500rpm and this will be the new idle. The bike has great power at 7000k-redline. I readjusted the the mixture screw to 2.5 and 3 turns out but doesn't do anything different. I did make sure the throttle snaps back.
Any help would be great.
I can get pictures once I get home.
Check the vacuum hose routing and for leaks around the carb boots. High, or hanging, idle is generally caused by a lean condition.
What can i do do fix the lean issue. As i said i put richer jets in the accomondate for the air lunchbox and standard rejet
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(http://img.tapatalk.com/d/14/05/22/a5aqenyh.jpg)
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(http://img.tapatalk.com/d/14/05/22/6eta2uva.jpg)
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(http://img.tapatalk.com/d/14/05/22/y2e9utym.jpg) found this crack in the t tube that is on the carb breather tube could this by my problem
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So last night I installed a single #3 washer on each needle. This helped with the mid-range. I do notice small backfiring at idle when i snap the throttle. my current setup is:
Pilot-20
Mid-65
Main-142.5
1 Washer
3 turns out
K&N lunchbox intake
Stock Exhaust
Any help would be great. O0
have looked at this thread?
http://gstwins.com/gsboard/index.php?topic=41199.0
Quote from: Gorilla on May 22, 2014, 11:12:09 AM
have looked at this thread?
http://gstwins.com/gsboard/index.php?topic=41199.0
thank you, this info was helpful.
I have looked at it and most i tried yo eliminate the first time. The throttle snaps back everywhere the chock does go back to regular position. I do check all the seals and tightened them good not sure how to do the wd 40 check. But for the idle i start the bike intially and the idle sets at wherever i adjust it to. Then if i rev ot holds at 4-5k and if i try to lower the idle screw ot slowly drops but lower then my inital set idle.
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wd40 check is easy start the bike and spray small mists of wd40 on the carb boots if no engine rev move on to airbox carb boots and so on till you find where the air leak is. you from minnesota?
Idle should only be set once the bike is fully warmed up. I'd say at least 10min running, some might say more...
Also on the choke - Do you mean 'goes back to regular position' as in at the handlebar?... or did you actually check that the choke mechanism at the carbs is returning properly and spring is connected correctly, etc?
- Bboy
Quote from: rexpepper651 on May 22, 2014, 12:24:25 PM
wd40 check is easy start the bike and spray small mists of wd40 on the carb boots if no engine rev move on to airbox carb boots and so on till you find where the air leak is. you from minnesota?
sweet I did that i noticed the carb boot between the engine and boot the wd40 was going through there so I will replace those hopefully that is the problem. And a lot of going through there.
And yes im in Ramsey, Minnesota
Quote from: BockinBboy on May 22, 2014, 12:33:02 PM
Idle should only be set once the bike is fully warmed up. I'd say at least 10min running, some might say more...
Also on the choke - Do you mean 'goes back to regular position' as in at the handlebar?... or did you actually check that the choke mechanism at the carbs is returning properly and spring is connect right, etc?
- Bboy
Both the handlebar lever and the slide on the carb goes back it is very stiff though when pull the choke on.
On the carb boot#21 it looks like the gasket is replaceable#22.
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awesome dude! havent see any other gs's on the road here in mn im in washington county.
Quote from: rexpepper651 on May 22, 2014, 12:48:54 PM
awesome dude! havent see any other gs's on the road here in mn im in washington county.
I have seen about 3 others in the past 2 years of riding but I just ordered the carb boot locally going to pick it up I really hope this is the problem. I love my bike its my first and I just have to much fun on it
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yeah i try an get most my parts either at bobs cycle or the hitching post right down here on concord. my first bike too such a joy to ride! safe riding! hope you get everything squared away!
This part is becoming a real challenge to get.
partzilla might have the gasket and the boot. i got my boots from hitching post but i dont think mine had a gasket too.
everyone has it but shipping for the parts is more than the parts them self
May be a good time to walk into a Suzuki dealership.
I found one on the other side of the cities i replaced it but still hanging idle and stoll a problem with the initial idle at start but once its revved it hangs
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I find with this particular setup, the lunchbox filter can be suspect for a leak there as well... Unlike the stock airbox which doesn't have much room to incorrectly fit without noticing, the lunchbox filter is pretty free as it is only held up by the carb connection. Ensure you have a solid fit and connection there. By your symptoms, it definitely sounds like you have an air leak... Run the bike, and spray WD40 at every possible air entry point and listen for a change in rpm. Worst case scenario is a faulty headgasket - but I'd sure scour the grand earth bubble of that bike to find a leak elsewhere before I'd resort to replacing a head gasket (most especially so if you didn't have these issues before the mixture changes).
- Bboy
When doing the wd40 test is it best to do this once it warmed up and at the hanging idle? Also so far the carb boot orings have been changed but what I noticed on the flanges on the carb boots is that they are bent inward slightly but when I tighten it down they flex back..
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So i started the bike today after a ride home from school i did the wd40 check and sparyed everything on the carbs while the rpms were hanging at 4500. After contiounous spraying no change at all. The bike rides really nice all the way to redline and the plugs are no turning more brown from being white a couple days okay. The bike starts fine with chock but once its warm it acts up with occasionaly backfire. Im going to replace the small oring on the top of carb today and maybe work with floats a little.
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