97 BMW F650 won't start after 3 yrs...suggested solutions ?

Discussion in 'Technical & Maintenance' started by townieglenn, Oct 21, 2018.

  1. townieglenn

    townieglenn Member

    Battery will spin the engine all day it seems. The display on my trickle charger is reading at 13.6v . Bike turns over no problem ..plugs are showing spark Could it be the Regular gas?!? The bike will only run on higher octane fuel. I know this to be true even tho the Owners Manual specifies 85 or higher. I once had to use regular gas in Burgeo and the bike hated it...ran for hours like it was running low on fuel. ( fun fact- in the Trouble Shooting section my OM suggests that the reason the bike won't start could be "Ignition key in wrong position. Solution ? Operate correctly")
    Is it possible that the plugs , which are correct but old , just won't ignite my shitty Port Rexton gas ? gonna try all again with new plugs soon..and some fancy gas
  2. Wayne

    Wayne Well-Known Member

    Fresh gas and new spark plug is probably the easiest thing to try first.
    sleepyhead65 likes this.
  3. RossKean

    RossKean Active Member

    Compression test...
  4. Backdraft

    Backdraft Active Member

    Again... check the timing if engine has been apart...

    Oops... seen your reply Wayne....

    Coukd have spark but at wrong time ... lol
  5. skibum69

    skibum69 Active Member

    octane shouldn't matter, did you say you had fresh gas?
  6. Backdraft

    Backdraft Active Member

    Maybe you have the boxer engine option ?
    Again... check the timing if engine has b[​IMG]een apart
  7. townieglenn

    townieglenn Member

    Thanks for all your input. Timing shouldn't be a factor as the motor wasn't out or opened at all..it's a Rotax 650 single..Methinks compression test might tell me more ..Right now I'm gonna hafta hang up the apron and tackle this later.
    Mike , I can't help you haul apart your 640 as I'm back out to Winnipeg soon for another job. Lotsa fun used bikes out there to be had too !
  8. skibum69

    skibum69 Active Member

    Good for you, I fly home Tuesday

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