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fuel economy

Discussion in 'XJ Technical Chat' started by Ltdave, May 5, 2008.

  1. Ltdave

    Ltdave Member

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    Location:
    as far east as you can get in michigan 43.027407,
    filled the tank to the bottom of the filler tube collar. put 32 miles on it and looked at the fuel level. the gas gauge is showing 'full' yet but i know its getting low. when i checked it the fuel is down to slightly below the backbone tunnel in the tank. certainly looks like a lot of fuel gone already...

    im not overly concerned about the gauge and its accuracy but i swear ive used an awfully large amount already. at this rate the bike might run about 125 miles or so (ROUGH estimation)...

    whats everyone else getting from a tank of fuel? my buddy's kawasaki zrx1100 goes about 180 miles on a 5+/- gallon tank...

    i didnt race it around any, i drove pretty sanely and included city, country and a bit of interstate in the run yesterday. i will add more today...
     
  2. wizard

    wizard Active Member

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    have you got any carbs on that thing Lt, or are you tipping it straight in the barrels ?
     
  3. Ltdave

    Ltdave Member

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    Location:
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    yeah its got carbs....lol...

    the mixture is pretty good based on the plugs (pulled and displayed in another post)...

    tonights ride revealed some more electrical issue with the sender because i went from a 'full' tank to '1/2' then to empty with the warning light and everything...

    it went back to 'full' as i was heading down the road after a stoplight...
     
  4. Nick

    Nick Member

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    Location:
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    Last year I averaged 35 usMPG with my 750
    I refill the tank around 200 to 225 km's or 125 to 140 miles.
     
  5. Hyperion

    Hyperion Member

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    @ this moment i get an average of about 15 km per liter (a bit more than 35 miles/gallon (US))

    It has the tendency to get better when the wheater gets warmer....

    Need to carb-sync and replace oil + filter... it should be running more economical then...
     
  6. dinoracer

    dinoracer Member

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    I get 47 when cruising it down the freeway at 75 mph. When on the go I get in the high 30's. Just ran the tank dry two blocks from home Sunday. I went about 315 km's on 5 gallons of gas. yup I was having fun :)
     
  7. MGM8675309

    MGM8675309 Member

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    I was getting a steady 34 MPG before i found an issue with the spark plugs, I'm hoping it's up around 40 now but i've yet to take it out on a good cruise to find out. I think I get around 140 miles on the tank, 160 tops.
    My Ninja i bought last year consistently gets 50 MPG on a 4.1 Gal tank so i'm usually around 200 miles when it's time for gas.
    The ninja gets better gas mileage, so in these times of ever rising gas prices, it's getting the majority of the seat time.
     
  8. Ass.Fault

    Ass.Fault Active Member

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    I average around 150m before res.
    If I am getting on her a bit harder I end up at about 120m before hitting res.
     
  9. PGDBUD

    PGDBUD Member

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    I hit reserve at 110 mi. with the 650's 3.4 gal tank.

    It takes 2.3 gal to fill = avg. 47 mpg.

    May be better if I could ride less than 70 mph here in so cal!

    But I would get run over!

    I can't believe it with gas near $4 the SUV's are still going 85+.
     
  10. gmtech

    gmtech New Member

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    I just filled my tank yesterday and I had put 149 miles on and took 3 gallons to fill. That is awesome.
     
  11. Alive

    Alive Active Member

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    You Americans and your funny language... MPG... Gallons...

    I'm surprised you havent moved to metric :)

    I have a 22ltr tank and get around 220 to 250 km per tank depending on how hard I ride ;)
     
  12. pvtschultz

    pvtschultz Member

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    I don't think that you'll ever see us switch to that other system. During my college years learning to become a mechanical engineer I was exposed to the metric system to a great extent and am quite comfortable with it. I guess I'm multi-lingual if you will. But now in the "real world" of work, I use the english system probably 90% of the time.

    I guess were just stubborn and ignorant, but you already knew that. :roll:
     
  13. MGM8675309

    MGM8675309 Member

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    We actually DID move to metrics back in the 70's.
    It lasted less than a year before the American businesses and Gov't said Enough!
    I don't know if it was too HARD or if the politicians thought "We ARE the world power!"
     
  14. TheHound

    TheHound Active Member

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    Not to hijack the thread but, how much fuel should be left when you hit reserve?
    There was less then 1/2 a gallon in the tank and I was still in the on position.
    I noticed that it would not take gas all of a sudden, bogged.
    I immediatly thought of the carbs that I just did.
    So I figure I would fill up with premium maybe stop for some seafoam on the way home.
    Filled her up no problem the rest of the ride.
    It could of been out of fuel and bogged.
    Right.
     
  15. Ass.Fault

    Ass.Fault Active Member

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    That "bogging" means it is time to spin the petcock to reserve.
    1/2 a gallon is kinda stingy, I have about >1 gal left before I flip.
    Someone might have modified the petcock, or its a trait of the 650 seca, or your just imagining things ;)
     
  16. jaredfore

    jaredfore New Member

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    Location:
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    1980 650 maxim

    get 100 miles before it starts to sputter and i have to turn to Res.
    Get about 42 mpg
     
  17. TheHound

    TheHound Active Member

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    :lol: hahahaha :lol:
    Right.
    Saying to myself "it's Not the carbs, its not the carbs"
    hehehehehe
     
  18. PGDBUD

    PGDBUD Member

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    Update: My 40 cubic inch Yamaha is getting even better with age. I went for a longer trip over the weekend 90+ miles with a passenger and got 48.8 miles per gallon.
     
  19. plansea

    plansea Member

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    I am a new 1982 650 YICS Seca rider looking for some feedback on the mileage I am getting. I did a quick ride to the Interior of BC yesterday that included climbing a long 4068 feet (1240 m) mountain pass and kept the bike at 5,000 rpm much of the time at about 115km/hr or about 70 mph max and a bit of around town riding. My three fill ups gave me mileage figures of 42 mpg, 37 mpg and finally 35 mpg on the long ride home always at full highway speed. I go on reserve at about 220 km or 135 miles or so.
    I keep hearing you guys working on your carbs, do my mpg figures seem OK and can I leave my carbs alone for awhile ? It pulls quickly to redline in the first four gears, I won't be trying that in 5th until I get new tires :)

    Thanks,
    Eric
     

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  20. acergremlin

    acergremlin Member

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    1982 650 seca and seem to be averaging 47 mpg with a good mix of riding
     

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