| Author | Message | ||
     Gowindward |
What's your typical fuel range on a tank of gas. I've been going on reserve at around 120-125 miles, which seems pretty short. I haven't paid enough attention at the pump to figure mpg yet. | ||
| S2pengy |
I gotten as much as 244 miles on a tank on the S2 and 238 on the S2t, motors are stock other than jetting and exhaust... | ||
| Shot_gun |
I think my personal best was 218 when my intake seals were leaking. With cams, exhaust, carb ect. I get betweeen 160 180 miles till I have to switch over. i think your missing some mpg, about 15 if my math is correct. It can vary with how much you have packed up on the motorcycle but I don't think it will vary that much. | ||
| Gowindward |
I filled up at lunch and put in 4.268 gal. with 134 mile on the odometer. Works out to 31.4mpg. Darn gas HOG! Not to good! The previous time I filled up I really topped the tank off to, so if anything the numbers would be to the good side. I kind of thought something was not quite right. I guess it's time to start looking over the fuel system and check the jets in the carb. | ||
| Nbuell |
With a mix of city and highway driving, I get on average, 215 miles from fill up to switching to reserve. On several long trips, I have gotten 247 miles before fill up. But I was into the reserve. The bike is stock, except for rejetting, other carb work and SSR exhaust. | ||
| Ratbuell |
160-ish reserve on my S2. I've managed not to run it dry and push it home yet  You could always remove and 'modify' your petcock assembly. There's a long straw (main tank) and a short straw (reserve). Shorten the short straw, you have more main fuel...but less reserve. Its a balance, and empty is still empty...it just depends on whether you'd rather have more reserve fuel, or less. | ||
| Gowindward |
Joe, it is a poor fuel economy problem. I'm getting 31-32mpg. I think I need to look at the jetting in the carb. | ||
| Beags |
I would check plugs before anything else Loren | ||
| Simond |
I get around 130-140 miles until reserve. When I first got the bike I thought it must have a massive tank as was still riding at 185 miles since I filled the thing up. It was only when I checked the fuell tap that I realised my error - I hadn't seen the arrow on the tap itself and had been riding on reserve all the time. | ||
| Bluzm2 |
I usually start looking real hard for a station when I hit about 195 miles. I'm usually on reserve at about 175 or 180. I've gone as far as around 225 on fumes (literally). My S2 has a t-storm top end, it's a bit more fuel hungry than a stocker. My son's gets a bit better than mine. Brad | ||
| F_skinner |
Many things can cause poor fuel economy. However the most important part of the equation is the carb. A poorly tuned carb, one that needs new gaskets, jetted improperly or simply dirty can cause poor fuel economy. | ||
| Gowindward |
I have had the spark plugs out and they look fine. The carb is high on my to do list. I'm picking up jets today, and will tear into the carb as soon as I can get time. It had a V&H exhaust and I went back to stock, so I'm guessing the jets were changed at the time the exhaust was changed to the V&H by the original owner. The bike only has 5500 miles on it so it certainly has done more than it's share of sitting so the carb probably could use a cleaning too. Hopefully the gaskets will be in okay shape. I'm beginning to think the dealership's parts guys think my name is "Special Order" because that's what they say nearly every time I go in to get parts for my Buells. Sure impedes work progress. | ||
| Doughnut |
I used to fill up at about 180, which kept me from having to hit the reserve. | ||
| Ebutch |
218 before reserve.Only mods Mikuni carb,Vance-Hines muf.Also bad web mod on kick-stand.You can put more gas in it not laying down compared to stock kick-staned.Pull Some GGGGGGs Butch | ||
| Ebutch |
265 when new.It was coughing a lot then! | ||
| Gowindward |
I took the day off to get a few things done and one of those was get the carb off the S2 and see what's going on with the jets etc. It had the stock 40,185 jets installed and did have some varnish build up on components. I cleaned it up installed a 45 slow jet, and a new 185 main jet. The enrichment valve did have a little tiny rubber piece loose on it. Cleaned that up and reinstalled and once again had to "special order" a new one from my dealer. I'm thinking that valve is the cause for the poor fuel economy. Time will tell.  I do have fuel leaking around the rim of the fuel cap flange. I have a new boot arriving tomorrow, so that should help too. | ||
| Ebutch |
Loren check O-ring in gas cap.also weak vac pist. in carb.I don,t have them in Mikuni.When I had stock carb along time ago corn gas(methinal) would raise hell with carb rubber parts!Biggest gas hog I had was 1971 BSA Rockit-Three 26 miles a gal.But realy fast in it,s day! (Message edited by ebutch on April 24, 2009) | ||
| F_skinner |
Loren, I get about the same as you around town. A lot of stop and go stuff. This weekend I got 60 mpg going down a mountain pass but it was around 50 mpg otherwise on the open road. | ||
| Gowindward |
I replaced the enrichment valve (choke valve) and now she is cold blooded, so I think that fixed the problem. It rained most of last week, and between Mother's Day weekend, and three graduations this weekend, I have not be able to go through a tank a fuel yet. I still have the fuel leak at the filler cap area. I think it's the o-ring between the vent and the filler cap flange, but it's hard to tell. Just need some free time and a low fuel tank to be able to replace the o-ring. | ||
| F_skinner |
Loren, I just replaced the O ring on the gas cap and it seemed to solve my problem with gas leaking. On this last trip I was filling up every other time with Lynn on her Sporty. To tell you the truth I am not sure how much fuel the S2 tank holds. I never put more than 2.44 gallons at 140 to 160 miles on the odometer. It gets better mpg than my 2004 E Glide but I think a lot of that has to do with the weight of the bike. I did notice about a 5 mile difference about every 100 miles between Lynn's odometer and mine. Hers would read 95 miles and mine would read 100. That is due to the mechanical speed sensor. | ||
| F_skinner |
Well, I spoke too soon. I cleaned the bugs off the S2T today and surveyed the lost bolts. Only two this trip, I took the big bags off to repair the one that got damaged. After I cleaned the bike I started her up and gas was flowing out the carb vent tube so I imagine it is a stuck float bowl. I guess it could be a vent problem as well but I will check the carb first. I will rebuild the carb this week. I do not think I could get very good gas mileage like that. Funny how it ran fine for three days and 1200 miles and decided to crap out when I got home.  | ||
| Gowindward |
That's odd! Makes you go Hmmm???  I pray all my break downs are home home! That would make life real sweet. LOL I went to change out the o-ring on the tank vent. Bigger is better...right??? Well not this time. Put a little thicker o-ring in and as I'm trying to get that last half turn of the vent so the tube barb facing forward and SNAP...actually it was F@!&*! The threads broke off the vent. They do call me "Special Order"...looks like Baby is parked again waiting on parts. At least it was while she was parked in my garage. | ||
| Ratbuell |
However the most important part of the equation is the carb Odd...usually for me, the most important part is the right wrist  | ||
| Maru |
I agree with you Rat. While i have only owned the bike long enough to run three tanks of fuel through it, in my case mileage varies quite a bit bases on how far you have the throttle cable stretched. My first 2 tanks lasted over 200 miles for a rough average of about 50 mpg. I was in a rush to beet the rainstorm on Sunday and ran about 80 miles at about 90 and it went on reserve at 116. | ||
| Spiderman |
cranking at 85MPH I got 195 before hitting reserve. She has t-storm heads and I am unsure of the cams.... | ||
| Court |
80 mph is the critical speed. No clue why. 80 or under I always got about 204. Above 80 it drops fast. | ||
| Rex |
This weekend at the Buell S2 gathering, I filled up with 115 on the odometer, and it took almost two gallons, which is over 50 mpg...REX | ||
| Rex |
and the tank looked full when you looked inside... .My m2 always gets over 50 and sometimes 60. six speeds and european gearing on the M2 though ..rex | ||
| Spiderman |
OK just filled up this afternoon. 60+ miles of hammering IE 85+ on the freeway. The rest normal nackroads and city riding. stoped at 201 just about to hit reserve and topped off at 4.010 gallons for a total of 50.12 MPG | ||
| Rex |
You're the best. How are you going to paint he S2? Mary Jane? Aunt May? Green Goblin? REX |
