SuzukiSavage.com - Started The Carb Mod

SouthernMD

Ex Member

Started The Carb Mod
05/11/06 at 02:22:51

I got the cap off of the idel mixture screw and followed the directions in red2k1’s post,

Mid-Range Power & the White Spacer (Backfire)
We can also fatten up the low end of your bike's carburetor by turning out the low-speed mixture screw. To gain access to this screw, you'll need to drill out the brass plug pressed in over it and yank it out with a sheet-metal screw attached to a slide hammer. You'll find that plug up high on the right side of the carb about where the mouth enters the carburetor. Usually Suzuki applies a splash of white paint over the brass plug so that it's immediately noticeable. With the engine warmed up and idling, turn the mixture screw out incrementally until you achieve the highest idle. There will be no doubt in your mind that you're making progress because the idle will come up and sound stronger. At this point, turn the idle adjuster knob out and bring the idle back down to a leisurely gait.

but I didn’t get the expected result no matter how much I turned the mixture screw out the idle didn’t change. So I took it back to its original position and started turning in, as expected the bike died (the original setting was 1 ¾ turns out from seated). Should I be doing this differently, or is this an indication that I need to pull the carb and give it a cleaning?

SOMD

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LANCER

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Re: Started The Carb Mod
Reply #1 - 05/11/06 at 04:07:09

Try some carb spray first to see if it will loosen up on its own. It has been sitting like that for a while and may just need some coaxing.
Keep in mind too that it may not be working because the pilot jet is too small. You could also try going one size larger and see if it responds. If there's no response after changing the pilot jet size then it needs cleaning.

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SouthernMD Ex Member	Re: Started The Carb Mod Reply #2 - 05/11/06 at 05:00:22 It looks like I'm gona be pullen the carb. It don’t look like that hard of a job. A couple of year’s age I procrastinated about doing the carbs on my boat and burned up a piston. So lesson learned since their’s only one piston in this beast I’m pullen the carb.
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Savage_Rob Serious Thumper Alliance Member Offline Mechanically Inclined Amateur Posts: 6972 Texas (Dallas area) Gender:	Re: Started The Carb Mod Reply #3 - 05/11/06 at 07:51:39 The pilot jet can be changed without pulling it if that's what you're doing next.
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SouthernMD Ex Member	Re: Started The Carb Mod Reply #4 - 05/11/06 at 09:11:42 I was figgeren to go over the whole carb after all it’s a 96 with 7500 miles, I’ll bet its spent some time sitten somewhare in its life and from the paint fade on the tank and fenders I’ll also bet that a lot of that sitten time was spent outside
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klx650sm2002 Serious Thumper Offline The more I learn the less I know. Posts: 2041 Cumbria,England Gender:	Re: Started The Carb Mod Reply #5 - 05/11/06 at 09:51:59 Carb cleaner, Wurth saBesto is what I use mainly because my mate (who has a street fighter building business) stocks it. Clive W
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SouthernMD Ex Member	Re: Started The Carb Mod Reply #6 - 05/11/06 at 15:26:10 I usually get STP or CRC.
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bacon13

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Re: Started The Carb Mod
Reply #7 - 05/28/06 at 17:17:11

Hey all

I also started this mod. I also had the same results that SoMD did. My original setting was 3.5 turns from seated. I turned it 8 turns out and no change to idle. I turned it all the way in and it about died. I put it back to the original 3.5 turns out.

If I try carb cleaner, where do I spray it? Or maybe an idle mix adjustment will make no difference?

Also, how can the pilot jet be changed without removing the carb, the fuel tank looks to be in the way?

Apologies- hate to beat this mod to death.

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Brewbrother Serious Thumper Offline Just lending a helping hand. Posts: 953 Gender:	Re: Started The Carb Mod Reply #8 - 05/28/06 at 18:34:37 Did you idle or ride the bike prior to the mod?? If so how long?? Sounds like it was not up to engine temp when you made you carb adjustments.
Back to top	Opportunities multiply as they are seized. No spacer,60 pilot jet, 155 main jet, plug door, sportster muffler, k&n drop in, iridium plug, brake pedal mod,de-badged, Dunlops, bullet turn signals. IP Logged

bacon13 YaBB Newbies Offline Posts: 46 Minnesota Gender:	Re: Started The Carb Mod Reply #9 - 05/28/06 at 18:47:39 idled prior for 5 minutes or so. maybe not warm yet. will try a short ride and do it again.
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steelwolf Serious Thumper Offline "I'm a cowboy, on a steel horse I ride." Posts: 847 Trinity, NC Gender:	Re: Started The Carb Mod Reply #10 - 05/28/06 at 19:43:25 bacon13 wrote on 12/31/69 at 16:00:05: Also, how can the pilot jet be changed without removing the carb, the fuel tank looks to be in the way? Apologies- hate to beat this mod to death. Pilot jet is in the bottom of the carb. Remove the bowl.
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Lion

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Re: Started The Carb Mod
Reply #11 - 05/29/06 at 11:43:37

It seems that I have the same problem too. Changed almost everything (take a look at my signature) except muffler (coming soon).
Pilot jet setting
before changing it: 2 1/2 turns out
after changing it: 2 1/4 turns out
So it is not a big difference in turns but it is a different bike now at gaining speed. Not to mention its sound... Wink

I think I need to replace the idle jet with a bigger one but I am not very sure...

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'96 LS400 (

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Brewbrother Serious Thumper Offline Just lending a helping hand. Posts: 953 Gender:	Re: Started The Carb Mod Reply #12 - 05/29/06 at 15:58:05 bacon13 wrote on 12/31/69 at 16:00:05: idled prior for 5 minutes or so. maybe not warm yet. will try a short ride and do it again. How did that work out??
Back to top	Opportunities multiply as they are seized. No spacer,60 pilot jet, 155 main jet, plug door, sportster muffler, k&n drop in, iridium plug, brake pedal mod,de-badged, Dunlops, bullet turn signals. IP Logged

Keith_B Ex Member	Re: Started The Carb Mod Reply #13 - 05/29/06 at 17:41:52 make sure the choke (inrichener) is not on when making any adjustments
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Brewbrother Serious Thumper Offline Just lending a helping hand. Posts: 953 Gender:	Re: Started The Carb Mod Reply #14 - 05/29/06 at 18:18:22 Keith_B wrote on 12/31/69 at 16:00:05: make sure the choke (inrichener) is not on when making any adjustments Good call. A mistake in the making.
Back to top	Opportunities multiply as they are seized. No spacer,60 pilot jet, 155 main jet, plug door, sportster muffler, k&n drop in, iridium plug, brake pedal mod,de-badged, Dunlops, bullet turn signals. IP Logged