SuzukiSavage.com - Bad Gas mileage

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: Bad Gas mileage Reply #30 - 06/16/11 at 11:21:24 if you're changing the air filter, change the plug too just cause. a little seafoam in the tank and check for leaks.
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weracerc Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 594 Greensboro, NC Gender:	Re: Bad Gas mileage Reply #31 - 06/16/11 at 11:23:29 kind of off/on topic - my 96 now gets 55mpg around town max speed 5th gear 60mph occassionally - i was putting 2.1 2.2 gal/per 100 miles now 1.7 1.8 gal/per 100 miles - raptor, re-jetted, air fuel screw 1.5 turns CCW, idle screw set for <1000 rpm'ish...now at 10K miles
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OE

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Re: Bad Gas mileage
Reply #32 - 06/16/11 at 11:30:37

Serowbot wrote on 06/16/11 at 11:16:04:

OE wrote on 06/16/11 at 05:16:26:

Also forced the deceleration valve (air shut off valve) open so it can't close. That does cause a little exhaust backfiring when decelerating but not bad. I get the standard pop when shutting it off.

One thing,... that's a transient enrichment valve... forcing it open is adding fuel...
...at least I think so...
??? Huh

...

Some call that thing an air shut off valve. I saw it on a parts beakdown somewhere called that. From what I can tell there are actually 2 routes for idle air to enter the carburetor and one of them is through that valve. The extra vacuum created by closing the throttle plate at higher speeds pulls the diaphragm and plunger outward and cuts off that second path for air creating a richer mixture. That's the way I understand it. Don't mean I'm right though

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rl153

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Re: Bad Gas mileage
Reply #33 - 06/16/11 at 11:56:28

I ran out and bought a new air filter and installed it . $40, ouch. The old filter was dark grey and fuzzy. This might do it. The parts guy at the mc shop said you usually change them at 8k , mine has 4k mi. I don't know if this is normal or not . It did smell a little gassy in the air box ,but no wetness or oil.He also told me to run high test 93 ,I been running 89 .I'm going to change the plug soon,and add seafoam. Well thanks again ,we'll see what happens.

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OE Junior Member Offline SuzukiSavage.com Rocks! Posts: 87 Panama City, FL Gender:	Re: Bad Gas mileage Reply #34 - 06/16/11 at 12:06:39 rl153 wrote on 06/16/11 at 11:56:28: He also told me to run high test 93 ,I been running 89 .I'm going to change the plug soon,and add seafoam. Well thanks again ,we'll see what happens. The Suzuki owner's manual and just about everybody on this forum reccomends using 87. I don't think they're all wrong.
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rl153 Serious Thumper Offline S40 Just right! Posts: 906 Bloomfield,CT Gender:	Re: Bad Gas mileage Reply #35 - 06/16/11 at 12:08:23 I said that to the guy . I don't know.
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CalisOsin Senior Member Offline Rather die, than live down on my knees. Posts: 297 Orange County, Ca Gender:	Re: Bad Gas mileage Reply #36 - 06/16/11 at 13:07:11 I'm not an expert by any means but I can usually regurgitate their info pretty well, so what I've read here is that the bike was designed to run on 87 and if you do run smoother with 91 it may mean there is too much build-up in your cylinder.... did I get that right?
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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28644 Tucson Az Gender:	Re: Bad Gas mileage Reply #37 - 06/16/11 at 13:18:51 That would make sense... High compression engines need higher octane... Less cylinder volume would raise compression... Ours run fine on regular,... high octane will hurt your mileage if anything...
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Routy Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2280 Winston Oregon Gender:	Re: Bad Gas mileage Reply #38 - 06/16/11 at 16:12:01 Anybody can get 55 mpg,........35 just means you're havin fun !
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rl153 Serious Thumper Offline S40 Just right! Posts: 906 Bloomfield,CT Gender:	Re: Bad Gas mileage Reply #39 - 06/16/11 at 18:59:32 When I bought the bike the previous owner told me they ran 89 octane. Do you think it would be a mistake to switch at this point to 87?
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Bad Gas mileage Reply #40 - 06/16/11 at 20:22:39 Nope
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Boofer

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Re: Bad Gas mileage
Reply #41 - 06/16/11 at 20:30:14

rl153 wrote on 06/16/11 at 11:56:28:

I ran out and bought a new air filter and installed it . $40, ouch. The old filter was dark grey and fuzzy. This might do it. The parts guy at the mc shop said you usually change them at 8k , mine has 4k mi. I don't know if this is normal or not . It did smell a little gassy in the air box ,but no wetness or oil.He also told me to run high test 93 ,I been running 89 .I'm going to change the plug soon,and add seafoam. Well thanks again ,we'll see what happens.

I run a Hi Flo Filtro air filter. $15. Bolts right up. Performance and mileage the same as OE filter I took out.

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2001 Black, Spitfire windshield, Headlight upgrade, Sissy rack, Tool bag, Fork bag, Harley muffler, Memory foam seat, Crash bars. Hwy pegs, Raptor.

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rl153 Serious Thumper Offline S40 Just right! Posts: 906 Bloomfield,CT Gender:	Re: Bad Gas mileage Reply #42 - 06/17/11 at 10:34:27 Thanks for the tip boofer ,where do you get the hi flo filtro ? Also if you think your have carbon buildup in you cylinder,what is the best thing to do about it?
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bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: Bad Gas mileage Reply #43 - 06/17/11 at 11:24:04 Put Sea Foam in the oil to clean up the engine,If you have Sea Foam you don't need to wait till you change the plug to put it in.
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rl153 Serious Thumper Offline S40 Just right! Posts: 906 Bloomfield,CT Gender:	Re: Bad Gas mileage Reply #44 - 06/18/11 at 09:11:54 how much seafoam in the oil? Do you have to change the oil shortly thereafter ,or just leave it in there? Thanks Bill .
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