Results 1 to 3 of 3

Thread: '00 F650 Funduro gas tank

  1. #1
    Registered User
    Join Date
    Apr 2019
    Location
    Sparks, Nevada
    Posts
    13

    '00 F650 Funduro gas tank

    All the specifications that I have read about my 2000 F650 Funduro show that it has a 4.5 gallon gas tank (17 litres). There is, evidently, a 0.5 gallon reserve reservoir to enable getting to a gas station after a lengthy procrastination. I've been tracking my mileage pretty closely in preparation for a "long" trip of about 200 miles; it's been getting between 47.5 and 50 mpg (leaning toward 47 with a full load).

    Sharpening my pencil, my calculations revealed that I could theoretically travel almost 200 miles before having to switch to the reserve tank. Factoring in a 20% safety margin, that put me at 160 miles to make sure I refilled the gas tank.

    Well, much to my surprise, I ran out of gas at about 152 miles. That put the main gas tank at close to only 3 gallons!

    Can anyone tell me what is going on?? I topped off the tank nearly identically every fill-up.

    - Is the reserve tank 1.5 gallons?
    - Could gas be unused on one side of the tank because of a gas-sucking hose to the carburetor being plugged up?
    - Maybe my phone's calculator is playing tricks on me?

    Any suggestions or ideas are appreciated!

  2. #2
    Registered User drneo66's Avatar
    Join Date
    Jun 2009
    Location
    Rochester, MN
    Posts
    459
    How much gas did you put in after the bike quit?



    Another thought - a broken or plugged petcock.
    Current: 2007 BMW R1200RT, 2013 F800GS
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

  3. #3
    Registered User
    Join Date
    Apr 2019
    Location
    Sparks, Nevada
    Posts
    13
    Quote Originally Posted by drneo66 View Post
    How much gas did you put in after the bike quit?

    Another thought - a broken or plugged petcock.
    I put in about 3.1 gallons after switching to the reserve tank and driving to the gas station (about 8 miles). It started easily when switching back to the main tank after the fill-up.

    Good suggestion on the broken/plugged petcock -

    I think I'll have to run it out of gas again to see if it stops at about 150 miles (~3 gallons). If it does, then I'd say the tank is either 3 gallons or there's something stopping part of the tank from feeding gas.

    Thanks -

Similar Threads

  1. 2000 F650 Funduro
    By mrmayhem in forum Thumpers - F & G bikes
    Replies: 3
    Last Post: 08-04-2019, 07:15 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •