SuzukiSavage.com - Idle mix adjustment

hawk41

Junior Member

Offline

SuzukiSavage.com
Rocks!

Posts: 65
Gilbert, AZ
Gender: male

Idle mix adjustment
02/27/16 at 09:26:00

Recently purchased a 2004 model and have done these recent mods, drilled holes in the standard muffler for a better sound and installed a K&N air filter. When I went to remove the idle mixture screw plug I found that it had been removed by a previous owner. It backfires alot when I roll off the throttle. I tried several ccw adjustments up to 2 full turns with no improvement. It is probable that the previous owner made some adjustments so I was wondering if there is a way to start over so to speak, e.g. screw the idle mixer all the way in and then back it off to factory settings and start experimenting from there before going the re-jetting route? Suggestions greatly appreciated.

Back to top

Older than dirt but still kickin' up dust!

IP Logged

Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28668 Tucson Az Gender:	Re: Idle mix adjustment Reply #1 - 02/27/16 at 10:12:32 Start at 2 turns out... (if you can go all the way in, without the idle lowering, you need a smaller pilot jet), (if you need to go more than 3 turns out, you need a bigger pilot)... 1 1/2 to 2 turns is ideal...
Back to top	Ludicrous Speed !... ... ... IP Logged

hawk41

Junior Member

Offline

SuzukiSavage.com
Rocks!

Posts: 65
Gilbert, AZ
Gender: male

Re: Idle mix adjustment
Reply #2 - 02/27/16 at 10:38:32

Thanks! When I turned it all the way in the the first time the engine quit running. Since the idle was set probably lower than it should be I increased the idle a bit and then screwed it all the way in and the engine almost quits running, i.e. barely turning over. Manual says #47.5 so what size or sizes would you purchase to try to correct the problem?

Back to top

Older than dirt but still kickin' up dust!

IP Logged

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: Idle mix adjustment Reply #3 - 02/27/16 at 11:06:00 You adjust the idle jet to idle correctly, not to compensate for some mod. you have to learn not to chop the throttle, ease it down.
Back to top	Versey's Place Tech Section Index IP Logged

hawk41 Junior Member Offline SuzukiSavage.com Rocks! Posts: 65 Gilbert, AZ Gender:	Re: Idle mix adjustment Reply #4 - 02/27/16 at 12:28:30 I was using the throttle valve stop screw to adjust the idle. Is that the correct adjuster to use? Sorry! I am not a mechanic but I am trying.
Back to top	Older than dirt but still kickin' up dust! IP Logged

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: Idle mix adjustment Reply #5 - 02/27/16 at 13:06:16 You adjust the idle mixture ~~jet~~ to idle correctly, not to compensate for some mod. you have to learn not to chop the throttle, ease it down. did you put in a K&N drop in or pod filter?
Back to top	Versey's Place Tech Section Index IP Logged

hawk41 Junior Member Offline SuzukiSavage.com Rocks! Posts: 65 Gilbert, AZ Gender:	Re: Idle mix adjustment Reply #6 - 02/27/16 at 13:49:48 I put in the square one that looks identical to the stock air filter. Is that called the "drop in" filter? I adjusted the one you have labeled "idle speed" to up the idle a "titch". The backfire is not too bad but it is definitely more pronounced after the changes to the exhaust & air filter.
Back to top	Older than dirt but still kickin' up dust! IP Logged

mastercarstech

YaBB Newbies

Offline

SuzukiSavage.com
Rocks!

Posts: 43

Re: Idle mix adjustment
Reply #7 - 06/11/16 at 10:48:01

Hey guys! I need something explained a little more clearly: I too attempted to adjust my air mix screw and found I could turn it all the way in without the idle speed changing at all. So according to what I read hear, I should change to a smaller pilot jet. According to my Clymer manual there are 2 pilot jets: one in the top diaphragm section next to the needle jet that they call the Pilot air jet (mine is a 62.5) and one in the bottom float bowl area they call the pilot jet (there were no identifying marks on this one). I assume this is the one I need to change to don't know what size to change it to since I don't know what size I'm beginning with.
The bikes an 86 Savage that was a non-running basket case when I bought it and I've had to rebuild almost everything on it now trying to do the final tuning. Has the stock muffler on it now that I punched a bunch of holes in the baffles for better flow and has a small cone air filter on about a 4 inch long straight pipe for the intake.
Thanks in advance for your help! You guys are an amazing resource and would never have been able to get it runner without all the info here! I hope to post my build and pics soon with all the interesting hurdles I had along the way. Grin

Back to top

IP Logged

hotprops Full Member Offline SuzukiSavage.com Rocks! Posts: 180 fort myers fl	Re: Idle mix adjustment Reply #8 - 06/11/16 at 22:47:34 just to help 2 items, cc wise or out on the screw is lean correct? if your spring behind screw mixture is too small has anyone had it move by itself? thanks
Back to top	IP Logged

justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Idle mix adjustment Reply #9 - 06/12/16 at 11:11:33 Remember to be Gentle when closing it. The tip is. a fine brass point. Instead of it idling on the sidestand, put a screwdriver in your pocket, ride, make Tiny adjustments at stop signs. Yeah, takes longer, but, it's funner.
Back to top	The people never give up their liberties but under some delusion.- Edmund Burke. IP Logged

azmav YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 12 Phoenix, AZ Gender:	Re: Idle mix adjustment Reply #10 - 06/12/16 at 19:01:02 Double amen to being gentle, I got mine well and truly stuck. Bike runs poorly and now I am on the hunt for a replacement carb. Not fun. Thing is stripped to he'll, tried every method out there. I may take it and have it drilled out, filled and retapped if possible.
Back to top	IP Logged

Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: Idle mix adjustment Reply #11 - 06/12/16 at 20:14:56 Before you turn the idle mix screw, drop the idle RPM. If you don't, you may not be able to hear a difference when you turn the idle screw. Just remember to turn the idle back up to 1000-1100 RPMs when you are done.
Back to top	There's no problem that a full tank of gas and a sunny day can't fix! 2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor IP Logged

mastercarstech YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 43	Re: Idle mix adjustment Reply #12 - 06/13/16 at 18:55:08 I thought I read somewhere on here, I think it was Lancer guide to tuning but not sure, that you should turn the idle speed up while you adjust the idle mix? Maybe I misunderstood. What is a good idle speed to use while adjusting the idle mix?
Back to top	IP Logged

Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: Idle mix adjustment Reply #13 - 06/13/16 at 19:07:41 No, turn it down. It makes it waaaay easier to hear adjustments in the idle quality. Too high of an idle speed and you may completely bypass the idle circuitry. If that happens then tuning the idle will do nothing for you.
Back to top	There's no problem that a full tank of gas and a sunny day can't fix! 2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor IP Logged