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General Category >> Rubber Side Down! >> Do I need a Carb adjustment?
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Message started by pisceschick1974_20 on 09/18/06 at 19:04:29

Title: Do I need a Carb adjustment?
Post by pisceschick1974_20 on 09/18/06 at 19:04:29

My 2006 S40 with 503 miles, backfires and sounds like a gun going off.
Also, when you shut the bike off it will backfire again.

Am I doing something wrong or do i need a carb adjustment?

Title: Re: Do I need a Carb adjustment?
Post by vroom1776 on 09/19/06 at 11:55:27

backfire fix (http://suzukisavage.com/cgi-bin/YaBB.pl?board=tech;action=display;num=1104205157)

please read thru the tech sect. lot's of info in there on carb mods. Happy tuning!

Title: Re: Do I need a Carb adjustment?
Post by pmanntex on 09/19/06 at 11:56:32

As a relative newbie, before somebody here rips you for this question, I'll just say do a search on backfire and you'll get plenty of info.

The bottom line: backfires are a feature of thumpers and particularly stock savages and new S40 off the lot for a number of reasons.

check your plug after about another 250 miles to see whether you need to adjust the gap or replace it all together with a hotter or colder plug. fuel updgrades (premium) also may help. doing these, I eliminated the backfire during downshifts and the pop at shut down is pretty minor.

Title: Re: Do I need a Carb adjustment?
Post by Dynobob on 09/19/06 at 12:51:38

Backfires are quite normal for a stock Savage. It doesn't really do any harm but your bike will be smoother and last longer with some carb work.

Short term fix - drill and pull the cap over your slow mixture screw and richen it up a bit (counterclockwise to richen).

Long term fix - rejet the carb. Go to maybe one size larger on the main jet, shave the white spacer over the needle to 2/3 or 1/2s thickness, and richen your slow mixture screw. On a stock bike, I'd go 2/3s on the white spacer.

Enjoy your new bike ;D

Title: Re: Do I need a Carb adjustment?
Post by thumperclone on 09/19/06 at 17:29:28

get the first service (600 mile) out of the way first..

Title: Re: Do I need a Carb adjustment?
Post by azjay on 09/20/06 at 07:37:21

first of all, welcome pisceschick, we've seen a couple posts from you (3), we'll assume you're another of our lady riders, we have many here, including my wife. introductions are welcomed and encouraged, what part of the savage world do you call home? anyhow, we're glad to have you aboard.

pmanntex wrote:

before somebody here rips you for this question,

secondly, we dont rip people on this forum, which is why it is such a fine place to spend a few minutes of our busy lives. encouragement, be it mechanical, rider skills, or personal, is the norm.

thirdly, as has been mentioned, the backfiring is normal ??? for a stock S40/savage, YOU aren't doing anything wrong. it is fixable, it is well documented and practiced throughout this group, and we'll help, if & when, you're ready.

Title: Re: Do I need a Carb adjustment?
Post by babbalou on 09/23/06 at 18:07:52

http://www.cyclemanual.com/C/Su/384.htm
Here's what some of us use. Probably more info than I can use but it's there if I need it.