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General Category >> Rubber Side Down! >> 2007 s4, looking for advice on rough running motor
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Message started by mountaintrout on 11/17/08 at 10:42:59

Title: 2007 s4, looking for advice on rough running motor
Post by mountaintrout on 11/17/08 at 10:42:59

i just bought a 2007 with 3500 miles and it was really smooth for about half a week of so. I think i need some advice on how to calibrate the carb a bit as it has gotten colder and there is a bit of elevation loss from where it was when i bought it. it idles slightly rough, but it is a bit rough in my slower speeds, 1st, 2nd gear as i am getting used to the turning and new owner stuff. i cant find a good diagram and i DON'T want to start turning screws blindly. help would be so helpful please.

Title: Re: 2007 s4, looking for advice on rough running m
Post by Yonuh Adisi on 11/17/08 at 13:10:37

It sounds like to me that a simple adjustment of the idle screw will cure the problem. But that is just me, I am sure others with more knowledge will chime in shortly.

Title: Re: 2007 s4, looking for advice on rough running m
Post by mountaintrout on 11/17/08 at 13:27:52

thank you kindly. id like to know which the screw is. your help was much appreciated

Title: Re: 2007 s4, looking for advice on rough running m
Post by Yonuh Adisi on 11/17/08 at 13:56:11

The idle adjustment is on the left side of the carb (when sitting on bike). It is a thumb screw and you can't miss it. You can see it in this picture curtisy of Savage Wahine in her carb clean-up thread.

http://suzukisavage.com/images/uploaded/LS650%20Mikuni%20BS40%20Carb%20Cleaning%2003.jpg

Title: Re: 2007 s4, looking for advice on rough running m
Post by mountaintrout on 11/17/08 at 14:04:08

that is great. i see the screw with the little bit of red on it.

Title: Re: 2007 s4, looking for advice on rough running m
Post by Yonuh Adisi on 11/17/08 at 14:06:33

That's it alright.